Now look closely at the patterns in the table. Compare the elements in each column and row. What can we say about
elements in the same group and elements in the same period of the periodic table?
Select all the correct answers.
The number of electrons in the second energy level increases by one down each column.
Elements in the same row have the same number of occupied energy levels.
For each column, the last occupied energy level has the same number of electrons.
The number of electrons in the first energy level increases by one from Li to Ne.

Answers

Answer 1

Answer: Elements in the same row have the same number of occupied energy levels. For each column, the last occupied energy level has the same number of electrons.

Explanation: Straight from PLATO.

Answer 2

On comparing the elements we can say that:

B. Elements in the same row have the same number of occupied energy levels.

Elements in periodic table:

In the periodic table, elements are arranged in an order of increasing atomic number. It comprises of seven periods and eighteen groups.

The elements present in the same row or in the same period will have equal number of energy levels or shells.

Thus, option B is correct.

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Related Questions

Where are earthquakes most likely to occur? A. Where Earth’s tectonic plates are sliding past each other. B. Where magma cools slowly beneath Earth’s surface. C. Where Earth’s lithosphere is in constant, slow motion. D. Where Earth’s seafloor is spreading into deep ocean trenches.

Answers

Answer:

d

Explanation:

Answer:

A

Explanation:

When the tectonic plates slide across each other they cause a huge vibration making the area around Shake if its a big enough of vibration it can breach the surface causing a huge crack.

Summarize why error is important.

Answers

Answer:

To say to you that you've made a mistake

Explanation:

Can yall plz help me!!!!!!!!!!!!

Define the terms below:
● Axis:
● Rotation:
● Revolution:
● Elliptical Orbit:

Answers

Answer:

Axis

Anatomy

In anatomy, the second cervical vertebra of the spine is named the axis or epistropheus. By the atlanto-axial joint, it forms the pivot upon which the first cervical vertebra, which carries the head, rotates.

Rotation

A rotation is a circular movement of an object around a center of rotation. A three-dimensional object can always be rotated about an infinite number of imaginary lines called rotation axis. If the axis passes through the body's center of mass, the body is said to rotate upon itself, or spin.

Revolution

In political science, a revolution is a fundamental and relatively sudden change in political power and political organization which occurs when the population revolts against the government, typically due to perceived oppression or political incompetence.

Elliptic orbit

In astrodynamics or celestial mechanics, an elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity equal to 0. In a stricter sense, it is a Kepler orbit with the eccentricity greater than 0 and less than 1.

:) gimme a crown plz

What is the relationship between the atomic mass of an element and a mole of that element's atoms?

Answers

Answer:

Each ion, or atom, has a particular mass; similarly, each mole of a given pure substance also has a definite mass. The mass of one mole of atoms of a pure element in grams is equivalent to the atomic mass of that element in atomic mass units (amu) or in grams per mole (g/mol).

Explanation:

The relationship between the given terms is provided below throughout the below segment.

One mole of such a component's atomic weights is approximately equivalent to that component's atomic mass. This same atomic mass of the oxygen element, for example, is about 16g. As a result, one mole containing oxygen atoms equals 16g of oxygen ([tex]O_2[/tex]). 1 mole containing oxygen atoms weighs 16g.

We can say that,

→ [tex]1 \ mole \ in \ gram \ of \ an \ element = Atomic \ mass \ of \ an \ element[/tex]

 

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HURRY I NEED HELP!! Please answer!!

Answers

Answer:

I'm confused on what u need us to answer

Beryllium
Symbol: Be
Atomic number: 4
Atomic mass: 9.012182 u

Lithium
Symbol: Li
Atomic number: 3
Atomic mass: 6.941 u

Which option is a mixture? a.carbon dioxide b. air c. oxygen d. carbon

Answers

The answer would be A.) carbon dioxide

Answer:

Air

Explanation:

Did test 100

Billy is trying to figure out what type of wood to use for building a model boat. He has a block of wood with a volume of 8.0 cubic centimeters (cm3) and a mass of 4.0 grams (g). What is the density of the block of wood in g/cm3 to the nearest tenth?

A 0.5
B 2.0
C 4.0
D 32.0

Answers

Answer:

A; 0.5

Explanation:

To find the density, you have to do the Mass divided by the Volume; in this case, it's 8.0/4.0.

8/4 = 0.5

What is the first state of matter

Answers

Answer:

Plasma

Explanation:

Estimated to be 99.999% of the visible universe, cosmic plasma may be considered to be the first state of matter, that preceded the other states of matter in the history of the evolution of the Universe.

_________ change is a change in matter that results in a material changing from one state to another without any change in chemical properties. Example: solid ice changes to liquid water.​

Answers

Answer:

Physical change

Explanation:

2 Examples of solid, liquid and gas

Answers

Answer:

Solid

1. Stone

2. Brick

Liquid

1. Water

2. Oil

Gas

1. Oxygen

2. Nitrogen

Answer:

rock and sand, water and steam, smoke and hydrogen

Explanation:

rock and sand are solids, water and steam are liquids, smoke and hydrogen are gases. trust me i know this

A chemist burns 0.8 g of iron in oxygen.
The iron reacts to form 1.1 g of iron oxide.
Calculate the mass of oxygen that reacted with the iron.

Answers

Answer:

0.3g

Explanation:

1.1 - 0.8 = 0.3

Hope this helps

The mass of oxygen that reacted with the iron is 0.3g

The chemist burns 0.8g of iron in oxygen

the iron reacts to form 1.1g of iron oxide

Therefore the mass of oxygen can be calculated by subtracting the mass of iron in oxygen from the mass of iron

= 1.1 - 0.8

= 0.3g

Hence the mass of oxygen that reacted with the iron is 0.3g

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An element that is in the same period as nitrogen is _________

Group of answer choices

helium

neon

argon

sodium

Answers

Neon is in the same period

Answer:

Neon

Explanation:

Chemical element Chemical series Electron configuration

3 . Li -Lithium Alkali metal [He] 2s1

4 . Be-Beryllium Alkaline earth metal [He] 2s2

5. B -Boron Metalloid [He] 2s2 2p1

6. C-Carbon Reactive nonmetal [He] 2s2 2p2

7 . N -Nitrogen Reactive nonmetal [He] 2s2 2p3

8. O-Oxygen Reactive nonmetal [He] 2s2 2p4

9. F -Fluorine Reactive nonmetal [He] 2s2 2p5

10. Ne-Neon Noble gas [He] 2s2 2p6

1. An atom has 6 protons, 6 neutrons, and 6 electrons. What is the charge of the
atom's nucleus?

A.+6
B.+12
C.-6
D.-18

Answers

Answer:

+6

+6

+6

+6

+6

+6answer given

thanks

how many particles are in 100ml

Answers

Answer:

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:

CCl4(l) is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates. In the box below, draw a particulate diagram to show the species in the container after some of the CCl4(l) has evaporated. The phases of the species should be indicated by the spacing and distribution of the particles in the diagram. Some of the species shown in the legend will not be used.

Answers

Answer:

The phases of the species should be indicated by the spacing and distribution of the particles in the diagram

Explanation:

Evaporation would be a phase change from liquid to gas where intermolecular forces are broken CCl4 (l) -> CCl4 (g)

Diagram is attached below

We have that  from the diagram that when CCl4(l)  is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates that the molecules of CCl4(g)  becomes loosely held and apart from while in its closely held in its liquid state.

From the question we are told

CCl4(l) is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates. In the box below, draw a particulate diagram to show the species in the container after some of the CCl4(l) has evaporated. The phases of the species should be indicated by the spacing and distribution of the particles in the diagram. Some of the species shown in the legend will not be used.

Generally

We will see from the diagram that when CCl4(l)  is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates that the molecules of CCl4(g)  becomes loosely held and apart from while in its closely held in its liquid state

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energy is lost due to

Answers

Answer:

Friction

Explanation:

Energy is lost to heat as the object overcomes kinetic friction as it slides up the ramp. The energy loss is equal to the work done by the friction force.

What is a mixture meaning

Answers

Answer:

A mixture is a substance of different things combined together.

Explanation:

Hope this Helps!

Which of the following is an example that includes
evidence of a chemical reaction?

Answers

I’m pretty sure it’s C

what is homogeneous mixture?

Answers

A mixture is a portion of matter made up of two or more substances called constituents. Mixtures are the product of the mechanical joining of substances without change in chemical nature, and therefore, each constituent retains its properties.

the option 4

What form of energy is stored once glucose is from
o A. light energy
O B. kinetic energy
O C. chemical energy
O D. mechanical energy

Answers

Answer:

The form of energychemical energy

What element is the only Noble Gas in the s-block?

Answers

Answer:

Helium

Explanation:

Answer:

helium i guess i m not sure

Can y’all look at this and help please

Answers

Answer:

2, 3, 4, 5

Explanation:

Pretty sure protons matter a lot unless in acid and bases but ignore this. Atoms mostly empty space as electrons are reeeeeeeeeeaaaallllllyyyy far apart. number of electrons change it is an ion and neutrons change pretty sure its an isotope. Electrons are stupidly small and fast so they don't really count towards the weight. Most mas comes from neutrons and protons in the nucleus

Answer:

2,3,4,5

1st is wrong cuz if u change the number of proton it would change the atomic number which results in different element

6th is wrong because most mass of the atoms come from neutrons and protons collectively so if it would have said THE ATOMS MASS MOSLTY COMES FROM NUCLEONS then u could mark it right

why hot water is hot on touching?​

Answers

Thermal Energy

When a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy.

5. On a 92 point test, a student scored 87 points. What is their percent error?

Answers

Answer:

Explanation:

5.7471264367816%

Which option is an element?

a. oxygen

b. sodium chloride

c. air

d. water

Answers

Answer:

Explanation:

water

Answer:

oxygen

Explanation:

find the oxidation number of carbon in MgCO3​

Answers

Answer: +2

Explanation: Formula of oxide is MgO, because oxidation state of Mg in MgCO3 is +2.

Is the equation C2H4 —> 2C + 2H2 + 52.3 exothermic or endothermic?

Answers

Answer:

Exothermic

Explanation:

*PLEASE HELP*
How do carbon radiometric dating utilize isotopes?

Answers

Answer:

Radiocarbon dating works by comparing the three different isotopes of carbon. Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons. This means that although they are very similar chemically, they have different masses.

Explanation:

Which compound contains nitrogen with an oxidation number of +3?

Answers

Answer:

Nitrous Acid [tex]N_{2}O_{3}[/tex]

Nitrogen is in the +3 oxidation state in N2O3. Nitrous acid is a weak acid.

The compound contains nitrogen with an oxidation number of +3 is N₂O₃ and nitrous acid HNO₂. Nitrous acid is a weak acid.

What do you mean by oxidation state ?

The term oxidation state is defined as the total number of electrons that an atom either gains or loses in order to produce a chemical bond with another atom. The oxidation state is also called as oxidation number.

The formula for calculating oxidation states would be : The Highest Oxidation State for a Transition metal = Number of Unpaired electrons + Two s-orbital electrons.

The compound contains nitrogen with an oxidation number of +3 is N₂O₃ because it can acquire three electrons to form a chemical bond and to complete its outermost orbit (octet).

Thus, The compound contains nitrogen with an oxidation number of +3 is N₂O₃ and nitrous acid HNO₂.

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Explain in your own words what chemical change is

Answers

Answer:

A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust.

Explanation:

Answer: when one chemical substance is transformed into one or more different substances.

Explanation:

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