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shusha [124]
3 years ago
11

What is a coefficient that proceeds a substance in a chemical reaction?

Chemistry
1 answer:
Alla [95]3 years ago
7 0

Answer:

In Chemistry the coefficient is the number in front of the formula. The coefficient tells us how many molecules of a given formula are present.

Explanation:

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Answer:

The skin

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Which of the following is a characteristic of the actinides?
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Write the full electron configuration of the Period 2 element with the following successive IEs (in kJ/mol):
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Answer:

Boron (B) is the element whose IE matches with our data.

Electronic Configuration of boron: 1s^22s^22p^1

Explanation:

Ionization Energy (IE):

It is the minimum amount of energy which is required to remove the lose electron. If the electron is closer to the nucleus then greater amount of energy is required to remove the electron.

If we look from left to right in a period, ionization energy increases due stability of valance shell.

From the data given to us:

IE₁ = 801

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Boron has 5 electrons (3 in valance shell) that's why it has 5 Ionization Energies.

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radiant - chemical is the best answer

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