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Dmitriy789 [7]
3 years ago
13

Which of the following gases was most likely present in Earth’s earliest atmosphere?

Chemistry
1 answer:
netineya [11]3 years ago
5 0
D.oxygen i’m almost certain this is the correct answer.
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The atomic mass of carbon -13 is 13. It has six protons. How many neutrons does the isotope have​
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Answer:

13 - 6 =7

Explanation:

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3 years ago
Density is considered what type of property
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to show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configu
sineoko [7]

The aim is to use less space while demonstrating the distribution of electrons in shells

If you want to depict how an atom's electrons are scattered across its subshells, an orbital notation is more suited.

This is due to the fact that some atoms have unique electronic configurations that are not readily apparent from textual configurations.

<h3>How does electron configuration work?</h3>

The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration, also known as electronic structure or electron configuration.

<h3>What sort of electron arrangement would that look like?</h3>
  • For instance: You can see that oxygen contains 8 electrons on the periodic table.
  • These 8 electrons would fill in the following order: 1s, 2s, and finally 2p, according to the aforementioned fill order. O 1s22s22p4 would be oxygen's electron configuration.

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7 0
2 years ago
If metal ions in a solution were reduced, what would you expect to see?
marysya [2.9K]

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Solid metal

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The reduced form of metal ions is the metal in elemental state (simple substance). So, if you have a solution with metal ions and they are reduced, you probably will see the deposition of the metal. For example: if you have a solution with sodium ions (Na⁺), and the ions are then reduced, you will see the aparition of a solid phase of metallic sodium (Na(s)), according to the following half-reaction:

Na⁺ + e- → Na(s)

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A reaction of 17.0 g of ammonia with 26.6 g of chlorine gas
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Explanation:

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