Question 1

According to the formula for the maximum number of electrons in a shell, what is the maximum number of electrons that can be found in the 4th shell of an atom?

Accepted Answer

$$32$$

Question 2

Which equation is used to determine the maximum number of electrons in a given shell of an atom?

Accepted Answer

$$2n^2$$

Question 3

If an atom has 7 energy levels, what is the maximum number of electrons it can theoretically hold?

Accepted Answer

$$2 	imes 7^2$ = 98$$

Question 4

How many electrons can be found in the 5th shell of an atom?

Accepted Answer

$$50$$

Question 5

A scientist discovers a new element with 6 energy levels. What is the total number of electrons this element can theoretically hold?

Accepted Answer

$$2 	imes 6^2$ = 72$$

Question 6

If the principal quantum number $$n$$ for a shell is $$3$$, what is the maximum number of electrons that can occupy this shell?

Accepted Answer

$$18$$

Question 7

Which of the following statements best explains why the maximum number of electrons in a shell increases with the shell number?

Accepted Answer

The formula $$2n^2$$ shows that as $$n$$ increases, the number of available orbitals and thus electrons increases quadratically.

Question 8

If an atom has electrons in the 2nd shell, what is the maximum number of electrons that can be present in that shell?

Accepted Answer

$$8$$

Question 9

A medical researcher is studying an atom with electrons in the 3rd shell. How many electrons can this shell hold at maximum?

Accepted Answer

$$18$$

Question 10

Which shell would be able to hold a maximum of $$72$$ electrons?

Accepted Answer

6th shell

Question 11

If an element has electrons in the 8th shell, what is the maximum number of electrons it can hold in that shell?

Accepted Answer

$$128$$

Question 12

A chemist is analyzing an atom with electrons in the 1st shell. What is the maximum number of electrons that can be found in this shell?

Accepted Answer

$$2$$

Question 13

Which of the following is the correct calculation for the maximum number of electrons in the 9th shell?

Accepted Answer

$$2 	imes 9^2$ = 162$$

Question 14

If an atom has 5 energy levels, what is the total number of electrons it can theoretically hold?

Accepted Answer

$$2 	imes 5^2$ = 50$$

Question 15

A student claims that the 3rd shell can hold $$12$$ electrons. Which formula would you use to check their answer?

Accepted Answer

$$2n^2$$

Electronic Structure: Number of Electrons in Shells

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