Answers
Answer:
D has 18 electrons (since atomic number = protons = electrons)
[Ne]3s² 3p⁶ (spdf electron configuration)2, 8, 8 (basic electron configuration) ArgonE has 20 electrons
[Ar]4s² (spdf electron configuration)2, 8, 8, 2 (basic electron configuration)CalciumExplanation:
In spdf form, we are basically spreading out the total number of electrons over the different spdf orbitals. While doing this we have to remember that an s-orbital holds 2 electrons max, a p-orbital holds 6 electrons max, a d-orbital holds 10 electrons max, and an f-orbital holds 14 electrons max.
Based on energy levels, the orbitals are filled in the following order:
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, and 7p
So for example Argon with 18 electrons would be filled in the following way:
1s², 2s², 2p⁶, 3s², 3p⁶.
This can be abbreviated using the configuration of the previous Noble gas for example [Ne] = 1s², 2s², 2p⁶
∴ we can express Argon as [Ne] 3s², 3p⁶.
Related Questions
Major parts of the microscope that provides light to the microscope
Answers
Answer:
Explanation:
Illuminator. is the light source for a microscope, typically located in the base of the microscope. Most light microscopes use low voltage, halogen bulbs with continuous variable lighting control located within the base.
lava is a hot liquid rock. when lava flows over solid ground beneath it increases in temperature. what happens to the molecules in the solid ground when the temperature is increasing?
Answers
Answer:
Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing? The energy of the molecules in the ground decreases.
What kind of industrial facilities release Nitrous Oxide?
Answers
Answer:
the agriculture sector is an industrial facility that releases nitrous oxide
Explanation:
Answer: Hello!
Agriculture sector. The agriculture sector dominates emissions of N2O: emissions from agricultural soils in 2019 account for 55% of total UK emissions, and other agricultural sources add another 12%.
Explanation:
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about chemistry notes
Answers
Answer:
what about chemistry notes?
Explanation:
Will give brainliest and 20 points if you help!
Answers
Answer:
135 kPa
Explanation:
1. Write a paragraph of 3 lines on how a rainbow form
Answers
The most familiar type rainbow is produced when sunlight strikes raindrops in front of a viewer at a precise angle (42 degrees). Rainbows can also be viewed around fog, sea spray, or waterfalls.
A rainbow is an optical illusion—it does not actually exist in a specific spot in the sky. The appearance of a rainbow depends on where you're standing and where the sun (or other source of light) is shining.
The sun or other source of light is usually behind the person seeing the rainbow. In fact, the center of a primary rainbow is the antisolar point, the imaginary point exactly opposite the sun.
Answer:
Explanation:
A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the Sun.
all of the atoms of the elements in group 4 have 4 valence electrons
True or false
Answers
Answer:
That is true
Explanation:
The group determines the valence electrons in the outer shell , the period determines the number of energy levels.
what is the mass in grams of 0.250 mol of the common antacid calcium carbonate?
Answers
Answer:That's 25.8 g of calcium carbonate In 100 g of the sample.
Explanation:
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Carmen has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured.
Carmen has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured.
Which is the best conclusion about Carmen’s sample?
It is a liquid because it is clear.
It is a liquid because it flows.
It is a solid because it is thick.
It is a solid because it smells sour.
Answers
Answer:
Explanation:
Answer:
Its a liquid cause it flows
Explanation:
think about it none of the others make sense ice is a solid and its clear
something like a wall can be thick but it doesn't flow
please help me
convert 12,800 ounces to kg.
I need a solved problem!
Answers
HELP PLEASE!! Ndnsjjsjsjeh
Answers
Answer:
I believe it is B.
Explanation:
because an element is a for sure pure substance and I am sure a compound is too. I appologize if I am wrong.
is the freezing of mercury reversible or irreversible
Answers
Answer:
reversible
Explanation:
The freezing of mercury is reversible because solid mercury can be melted.
When compared to the standard hydrogen electrode, zinc has a reduction potential of -0.762 volts and copper a reduction potential of + 0.342 volts. What is the reduction potential when zinc and copper are connected to one another?
+0.420 volts
-0.420 volts
+1.104 volts
-1.104 volts
Answers
Answer:
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The limitation of Bohr's model is that electrons do not actually move in
Answers
Answer:
The Bohr atomic model did not make correct predictions of large- sized atoms and provided sufficient information only for smaller atoms.
Which common substance is an acid?
Question 3 options:
water
bleach
vinegar
baking soda
Answers
Explanation:
vinegar or acetic acid is an acid
La serie de Lyman se situa en la region ultravioleta del espectro. ¿Que linea quedara mas cerca de la zona visible del espectro? Explica por qué.
Answers
Answer:
Lyman series of hydrogen atom lies in the ultraviolet region, Balmer series lies in visible region, Paschen series lies in near infrared region whereas Bracket, Pfund as well as Humphrey series lie in far infrared region of electromagnetic spectrum.
Calculate the wavelengths of the following objects:
Part 1 (1 point)
See Periodic Table See Hint
a muon (a subatomic particle with a mass of 1.884 x 10-25 g) traveling at 340.0 m/s
nm
Part 2 (1 point)
an electron (me = 9.10939 x 10-28 g) moving at 4.15 x 106 m/s in an electron microscope
nm
Part 3 (1 point)
an 82.0 kg athlete running a "4-minute mile" (i.e. 4.00 min/mile)
x 10-25
nm
Part 4 (1 point)
Earth (mass = 6.00 x 10278) moving through space at 3.20 x 10m/s
x 10
nm
Answers
Sodium belongs to Group I and Period 3 of the Periodic Table and iodine belongs to Group VII and Period 5. Based on this information, what can you tell about the atoms of sodium and iodine?
Answers
Explanation:
Sodium is a highly reactive metal since it has 1 valence electron, while Iodine is a less reactive non metal with 7 valence electrons.
Tính [H] và [OH] của dung dịch HC1 0,1M? Tính pH của dung dịch?
Answers
Answer:
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Explanation:
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If you combine sodium(Na) and chlorine(Cl) to make sodium chloride how many atoms of each will you need? Explain
Answers
Answer:
I don't understand but I can tell u this:
Na has one extra valence electron and Cl has one missing one. Chemical reactions and forming of compounds is all in the electrons and not the nucleus. So, when highly reactive Na mixes with Cl, they form a stable compound called NaCl, or table salt.
If we are making one molecule of sodium chloride, we need one sodium atom and one chlorine atom. The formula of sodium chloride is NaCl.
What is sodium chloride?Sodium chloride is an ionic compound formed by the combination of sodium and chlorine atoms. One molecule of sodium chloride contains one sodium and one chlorine atom to form NaCl. Now if we are making one mole of NaCl, we need 6.022 × 10²³ atoms of each element.
Sodium is a metal and possess extra one electron in its valence shell. Chlorine have 7 valence electrons thus, it needs one more electron to attain octet. Sodium donates its electron to chlorine and gains a positive charge.
Chlorine gains a negative charge by accepting the electron from sodium. This opposite charge clouds undergo electrostatic force of attraction. And thus, it an ionic bond forms between them.
To find more on NaCl, refer here:
https://brainly.com/question/4487559
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If Frank creates 20 waves every 10 seconds, then how many waves does he create EVERY SECOND?
Answers
Answer:
2 waves
Explanation:
If Frank creates 20 waves every second then the way you solve is turn it into a proportion 20 waves/10 secs = x/1 sec which then turns into the equation of 10x=20 where x=2 hence Franks creates 2 waves every second.
Which is greater: the number of atoms in one mole of calcium, or the number of molecules in one mole of carbon dioxide (CO2)?
Answers
The number of atoms in one mole of Calcium and one mole of Carbon Dioxide is the same.
How to know the number of atoms?The number of atoms is determined by Avogadro's number (a constant number that determines the atoms per mole).
Avogadro's number is equivalent to 6.02 x 10²³ atoms.
This means one mole of each element contains 6.02 x 10²³. However, this number of atoms changes according to the amount of the substances or moles.
How many atoms does 1 mole of Calcium and 1 mole of Carbon Dioxide contain?
Considering these are two different substances but the number of moles is the same (1 mole each) the number of atoms is equal to Avogadro's number or 6.02 x 10²³ atom.
Learn more about atoms in: https://brainly.com/question/13981855?referrer=searchResults
Why
would scientists synthesize natural resources
Answers
Answer:
so that the can keep reusing it and reusing it instead of wasting materials
Explanation:
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what will happen to the population of 0.01% of bacteria that are not killed by hand sanitizer and how does this relate to evolution
Answers
Answer:
the 0.01% of bacteria will reproduce. These new bacteria will have the same genes and communities that allowed their parent bacteria to survive. This shows survival of the fittest, where organisms that are best fit for their environment will survive and reproduce, in the process of evolution.
Explanation:
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Answers
Answer:
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Explanation:
Why is milk white? and there is no diffrent in various mamals?
Answers
Answer:
Milk is naturally a white substance due to the make-up of water and other components including fat and protein that mix together to form tiny particles which reflect light. There is a difference in mammals milk; for example, hippos milk is pink.
Explanation:
9.56 x 105 cg is how many grams?
100 centigrams = 1 gram
Answers
How do you identify the element shown in a Bohr model?
Answers
Answer: There are three main factors that characterize the Bohr model. First, in the Bohr Model, the orbits have a set size and energy. There’s a correlation between energy and size: the smaller the orbit, the less energy it has. Electrons can move from one orbit to another by emitting or absorbing radiation.
Explanation: Hope this helped !
What is the primary source of light energy?
Question 2 options:
lightening
moon
electricity
the sun
Answers
Answer:
moon the sun.............hope it helps.......
A balloon is filled to a volume of 2.00 L with 3.50 moles of gas at 25
°C. With pressure and temperature held constant, what will be the
volume of the balloon if 1.60 moles of gas are added?
Answers
ANSWER;
2.914 L
Explanation:
A balloon is filled to a volume of 2.00 L with 3.50 moles of gas at 25
°C. With pressure and temperature held constant, what will be the
volume of the balloon if 1.60 moles of gas are added?
WE HAVE INCREASED THE NUMBER OF PARTICLES THE BALLOON BY
45.7%
ALL OTHER THINGS EQUAL, WE HAVE INCREASED THE VOLUME BY
45.7%
THE NEW VOLUME SHOULD BE 2.00 X 1.457= 2.914 L