Describe how the properties of elements in the same group differ to the properties of elements in the same period.

Answers

Answer 1

Answer:

All the elements of a group have similar chemical properties because they have same no. of valence electrons in their outermost shell.

All the elements of a period have different chemical properties because they have different no. of valence electrons in their atoms.

Answer 2

Answer:

4

Explanation:

Same group elements have the same physical properties and same elements in period have same chemical properties


Related Questions

iii. According to the law of conservation of energy, what can change? (1 point) FAKES WILL BE REPORTED I EILL GIVE U BRAINLIEST

Answers

Answer:

Nothing can change because energy can't be made or destroyed

Explanation:

A flagpole is an example of what type of pulley system?

A. Movable pulley
B. Fixed pulley
C. Block and tackle?​

Answers

Answer:

B

Explanation:

i learned the pulley system in school

Answer:

B. Fixed pulley 

Explanation:

Which is a valid velocity reading for an object?
45 m/s
45 m/s north
0 0 m/s south
0 m/s
Save and Exit
Next
Sunt
Mark this and retum

Answers

Next is the answer to the question

what is daltons theroy

Answers

Answer:

A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: (1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed.

Explanation:

What is the resultant force of a motorcycle travelling at 500 N with an air resistance of 50 N

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The resultant force is equal to :

[tex]500 - 50[/tex]

[tex]450 \: \: N[/tex]

What type of chemical reaction is this?

Answers

Answer:

OXIDATION/REDUCTION

Explanation:

Ba has been transformed from a neutral atom to a +2 ion

O has been transformed from a neutral atom to a -2 ion

Why are engineers called applied scientist?​

Answers

Answer:

Applied science is a discipline that is used to apply existing scientific knowledge to develop more practical applications, for example: technology or inventions. In natural science, basic science (or pure science) is used to develop information to explain phenomena in the natural world.

Answer:

• Because engineers apply science and its theories into practical situation

Take an example of;

A generator: When creating a generator, electromagnetic induction theorem is applied. [ self and mutual inductance ]

A plane: The wings are made in considerance of Bernoulli principle and viscous drag

[tex].[/tex]

Please help!
Answer please!

Answers

Answer: a

Explanation: a

WILL MARK AS BRAINLIEST IF CORRECT
The temperature of an enclosed gas at constant pressure changes from 400 K to 100 K atm. What happens to the volume of the gas?

a
The volume will increase to 4 times its original volume.
b
The volume will stay the same.
c
The volume will decrease to 1/2 of its original volume.
d
The volume will decrease to 1/4 of its original volume.
e
The volume will increase to 2 times its original volume.

Answers

Answer:

a

Explanation:

they are directly proportional. if one goes down the other goes up while pressure is constant

What was John Dalton's contribution to the development of the atomic theory?

A
Dalton recognized that tiny atoms combined to form complex structures.

B
Dalton recognized the presence of electrons around a nucleus.

C
Dalton recognized the presence of protons in the nucleus.

Answers

Answer:

A. Dalton recognized that tiny atoms combined to form complex structures.

The types of projection that are useful for making maps of the United States are called __________. (Choose 2)

Answers

Answer:

Mercator projection, geologic projection

If repeated measurements agree closely but differ widely from accepted value these measurements are?

Answers

d. precise, but not accurate

Can someone help please?

Copper occurs naturally as a mix of two isotopes: Copper-63 with a mass of 62.930 amu and copper-65 with a mass of 64.928 amu. The percent abundance of copper-63 is 69.09%.
Calculate the atomic mass of copper.

Answers

Take the weighted average of the individual isotopes.Explanation:63Cu has 69.2% abundance.65Cu has 30.8% abundance.So, the weighted average is 62.93×69.2% + 64.93×30.8% = 63.55 amu .If we look at the Periodic Table, copper metal (a mixture of isotopes but 63Cu and 65Cu predominate) has an approximate atomic mass of 63.55 g⋅mol−1 , so we know we are right.

Answer: 63.55

Explanation:

The attached chart shows the calculation.  The orange line points to the % abundance of Cu-65, which is the difference of 100% less the % Abundance of Cu-65 (since there are only 2 isotopes).

The weighted average contribution of each istope is calculated (blue arrow) and then summed to find the atomic mass of copper.

Which of the following is the source of energy for nuclear energy?
Select one:
O a. Nuclear fusion
O b. Nuclear fission
OC. Nuclear Inclusions
O d. Nuclear Reactions

Answers

Answer:

b. Nuclear fission

Explanation:

In a varve, summer is represented by _____.

sediment from melting glaciers being deposited in lakes

clay from wind-blown dust

ash from nearby volcanoes

None of these

Answers

Answer:

answer b

Explanation:

i took the test

Answer:

Hey let's talk here if you want

If 12.2 kg of Al2O3(s), 57.4 kg of NaOH(l), and 57.4 kg of HF(g) react completely, how many kilograms of cryolite will be produced?

Answers

Answer:  kilograms of cryolite ≈ 50.23 kg

Explanation:

Write the balanced equation

Let's start off by writing the reaction for the formation of cryolite:

Al₂O₃  +  6NaOH  +  12HF    →    2Na₃AlF₆  +  9H₂O

Determine the limiting factor

moles = mass ÷ molar mass

moles of Al₂O₃ = 12200 g ÷ 101.96 g/mol = 119.65 mol

moles of NaOH = 57400 g ÷  39.997 g/mol = 1435.11 mol

moles of HF = 57400 g ÷ 20.01 g/mol = 2868.57 mol

Since Al₂O₃ has the smallest number of moles in the reaction, it is the limiting factor. As such we will have to use the moles of Al₂O₃ to determine the moles of cryolite that will be produced.

Find the mole ratio between the limiting factor and the cryolite

The mole ratio of Al₂O₃ : Na₃AlF₆ based on the balanced equation is 1 : 2

∴ since the moles of Al₂O₃ = 119.65 mol

        the moles of Na₃AlF₆ = 119.65 mol × 2 = 239.3 mol

Calculate the mass of the Cryolite

Mass cryolite = moles × molar mass

                      = 239.3 mol × 209.9 g/mol

                      =  50229.07 g

      ∴ kilograms of cryolite ≈ 50.23 kg

LIST TWO REASONS WHY WE SHARE OUR RESULTS A SCIENTIFIC INVESTIGATION​

Answers

Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.

HELPPP PLZZZ ASAPPPPPO

Answers

Answer:

0.000471698

Explanation:

divide 0.125 by 265.

Velocity has both speed and direction, so it is a what

Answers

Answer: Velocity is a mathematical vector. That means it has both a magnitude (speed) and a direction. Scientists need to consider an object’s velocity to calculate its momentum — its velocity multiplied by its mass. Scientists use measures of velocity in everything from figuring out how much rain is falling to sending a rocket to space.

Explanation: Hope this help:)

. What is the total number of protons, neutrons,
and electrons in a cadmium, Cd, atom that has
a mass number of 112?
PLEASE I NEED HELP

Answers

Answer:

# of Proton: 48

# of Electron: 48

# ofNeutron: 64

Explanation:

The atomic number of cadmium is 48.

∴  atomic number = protons = electrons = 48.

Neutrons = mass number - atomic number

∴ Neutrons = 112 - 48 = 64.

⇒ number of protons= 48; neutrons= 64; electrons=48

8. Explain why fluorine has a smaller atomic radius than chlorine.

Answers

Answer:

Explanation: Fluorine has a smaller atomic radius than oxygen because fluorine has a larger nuclear charge. Fluorine has a smaller radius than chlorine because it has eight fewer electrons.

There are various kind of elements that are present in periodic table. Some elements are harmful,  some are noble gases. The size difference between chlorine and fluorine can be explained on the basis of number of shells.

What is periodic table?

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

As we go down along the periodic table the number of shells increases.

Atomic number of F= 9

Electronic configuration of F=2, 7

Atomic number of Cl= 17

Electronic configuration of chlorine = 2,8,7

So, there are total 2 shells in Fluorine while chlorine has 3 shells. The distance of shells increases with increase in number of shells. This makes the size of chlorine more bigger than fluorine.

Therefore, the size difference between chlorine and fluorine can be explained on the basis of number of shells.

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Name and Title:
Include your name, instructor's name, date, and name of lab.


Objectives(s):
In your own words, what is the purpose of this lab?


Hypothesis:
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.


Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.


Data:
Record the composition of each of your compounds below. Be sure to include the number of atoms for each element. An example has been supplied for you.

Compound Name Chemical Formula Sodium (Na) Atoms Calcium (Ca) Atoms Hydrogen (H) Atoms Oxygen (O) Atoms Carbon (C) Atoms Chlorine (Cl) Atoms
Ex: Sodium
hypochlorite NaClO 1 0 0 1 0 1










Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

Using two to three sentences, summarize what you investigated and observed in this lab.
Why do you believe knowing how elements and compounds react together is essential in everyday matters?
Some elements are more "reactive" than other elements; why do you think this is?
Choose one of the compounds from the table and explain how you know the numbers of atoms in your formula.
Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Answers

Answer:

I dont know your intructors name also do this yourself we dont know what the lab is

Explanation:

BaCO3(s) → BaO(s) + CO2(g)

(a) A student heated a 10.0 g sample of barium carbonate until it was fully decomposed.

(i) Calculate the number of moles of barium carbonate the student used.

moles of barium carbonate =

Answers

number of moles = mass

molar mass

BaCO3 molar mass = 197.34 g/mol

mass = 10g

n = 10/197.34

n = 0.05moles.

The number of moles of barium carbonate used are 0.05moles.

For X + Y → XY, if [XY] is increasing at a rate 0.10 M s-1, predict the rate of depletion of both reactants.

Answers

It’s 819. UWu Jan thanks s whhakswn shoaakb

What mass of glucose would you need (in g) to have 0.8 mol, given that the molar mass of glucose is 180 g mol-1?

Answers

Answer: 144 g

Explanation:

  Mass of glucose = moles × molar mass

∴ Mass of glucose = 0.8 mol × 180 g mol⁻¹

                               =  144 g

∴ the mass of glucose you need to have 0.8 mol of glucose = 144 g

Which ion has a smaller size,1)N---,O--,F-and Ne 2) Cl-,Br- and I ?Why
Help me to solve it!

Answers

Answer:

nitrogen because it has less number of protons and electrons, thus a samller atomic mass

Explanation:

Explanation:

Ne have smaller size because Ne have no negative charge compare to N, O and F which negative charge depends on size of an atom, Therefore more the negative charge , more will be the size of atom.Cl- have smaller size because as we go down the group, Size of the atom increase as Cl<Br<I irrespective to the atomic charge

Phản ứng nào sau đây chuyển glucozơ và fructozơ thành một sản phẩm duy nhất?
A. Phản ứng với Cu(OH)2, t0. B. Phản ứng với dung dịch AgNO3/NH3. C. Phản ứng với H2/Ni, t0. D. Phản ứng với Na.

Answers

Answer:

Aaaaaaaaaaaaaaaassplee

The trend towards smaller atomic radii as one moves to the right in a period is _____. A) faulty, as atomic radii in a period are nearly uniform in size. B) because of electron pair repulsion causing the expansion of the orbitals. C) wrong. Atomic radii increase across a period left to right as the larger d and p orbitals are occupied after the s orbital. D) due to the effective nuclear charge decreasing. E) due to the effective nuclear charge increasing.

Answers

Answer:

It’s E. Nuclear charge increasing

Explanation: it just is

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Option E is correct option.

What is periodic table?

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

As we go from left to right in periodic table the atomic radii decreases because of increase in effective nuclear charge . There is no increase in number of shells only the number of electrons increases which increase the number of protons in the nucleus and hence the effective nuclear charge of the atom which makes the size of atom contract.

Therefore, the trend towards smaller atomic radii as one moves to the right in a period is due to the effective nuclear charge increasing. The correct option is option E.

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A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. What is the porosity of the soil?

Please help me

Answers

The Answer is 50. hope this helps

if the reactants of a reaction have an initial mass of 25g what should the mass of the products be

Answers

Answer:

It remains the same

Explanation:

The law of conservation of mass states that, during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.

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how does human beings become civilized? I need help........,,,,,,,.............. A 4.50 kg block is suspended from the end of a light vertical rope. A time-dependent force is applied to the upper end of the rope, and the box moves upward with a velocity magnitude that varies in time according to v(t)=(2.00m/s2)t+(0.600m/s3)t2.What is the tension of the rope when the velocity of the box is 8.00 m/s? ANYONE PLEASE HELP ME WITH MY MATH HOMEWORK I REALLY NEED THE ANSWER RIGHT NOW BECAUSE I HAVE TO PASS THIS TOMORROW MORNING I HOPE YALL CAN HELP ME:(ILL MARK BRAINLIEST FOR THOSE WHO CAN ANSWER IT CORRECTLY!PS:DONT WASTE MY POINTS PLEASE IF YOU DONT KNOW THE ANSWER JUST PLEASE IGNORE IT:) Mr. Bell will make arrangements for shipping the goods as soon as he receives written ________ of your order.Select one:A. confirmationB. confirmC. confirmingD. confirmed 7)Sexual reproduction is the most common form of reproduction in the animal kingdom and is the only reproduction type in humans.With over seven billion humans on Earth, there is an enormous variation in genetics within the human population. Whichstatements describe how cell division and sexual reproduction contribute to this huge genetic variation? Select ALL that apply.A)B)Random fertilization of haploid eggs by many potential haploid spermincreases genetic variationIncreased frequency of mitotic division ensures that animals have cells toreplace those that are lost.The ability of homologous chromosomes to swap and exchange generegions in meiosis contributes to genetic variation.Random assortment of homologous chromosomes in metaphase I increasesthe variation of chromosomes that segregate into gamete cells in meiosis.Increased chromosome number at the end of meiosis ensures that resultingoffspring have additional chromosomes containing increased geneticvariationD)E) An atom contains 5 protons, 6 neutrons, and 6 electrons. What is the massnumber of this atom? * What type of figurative language is "My thoughts still cling to the moldering past. From 2002 to 2005, U.S. consumption of renewable energy increased an average of 0.17 quadrillion BTUs per year. About 6.07quadrillion BTUs of rhewable power were produced in the year 2002. Write an equation in slope-intercept form to find the amount of renewablepower Pin quadrillion BTUs produced in year y between 2002 and 2005. 3. Does the point (5, 10) fall on the graph of this line? (The line described in questions #1 and #2). How do you know? Show your work algebraically (That is, dont draw me a graph show me using numbers, variables, and/or symbols). (2 points). PLEASE ANWSER CORRECTLY!! I WILL MARK BRAINIEST!! LOOK AT PICURE!! TRUE or FALSE _____1.It is very important that you are aware of any changes in your body._____2.Any deviation from the normal must be keep in yourself._____3.You can go to your school clinic to seek advice from the health personnel there._____4.Don't wait for your health problem to get worse._____5.In the school,the school nurse or the health teacher can do the scoliosis screening test.help please Which is the best example of a question related to theme ? O A. When will the hero discover the important secret ? B. Who stole the jewels from the millionaire's house ? C. Where is the villain hiding in the old building ? O What is the best way to live in the modern world? can someone help with this Linear programming project The campaign of 1828 was unlike any other that had come before it. For the first time electors in most states were chosen by popular vote. The electorate had been expanded so that there was universal suffrage among white males. Suppose you had lived during the time period of the 1828 election. Would you have voted for Andrew Jackson? Write a well-constructed essay supporting either Andrew Jackson or the election of John Quincy Adams. 1: Determine your position and plan your essay by listing the reasons for it. 2: Be sure to back up your position with clearly stated reasons. Use at least one primary source. ( Will Mark Brainliest if correct and every step has been taken). PLEASE HELP ME!!!I need this ASAP please A shop sold small and large tin fish in the ratio 2:3 if 600 small tinned fish sold how many large tinned fish were sold??and find the total number of tinned fish sold by the shop??? This is an example of what kind of wave? Nearest 10,000 to 90.872 I just want to make sure I got this answer right.