Understanding Electronic Configurations

What is the maximum number of electrons that the first shell can contain?

• 2

• 8

• 18

• 32

How many electrons can the third shell hold at maximum?

• 2

• 8

• 18

• 32

What is the electronic configuration of a lithium atom, Li?

• 2, 1

• 2, 8, 1

• 2, 8, 8

• 2, 8, 8, 1

What is the electronic configuration of a potassium ion, K⁺?

• 2, 8, 8, 1

• 2, 8, 8

• 2, 8, 7

• 2, 8, 6

What is the electronic configuration of an oxide ion, O²⁻?

• 2, 6

• 2, 8

• 2, 8, 8

• 2, 8, 7

How many electrons does a magnesium ion, Mg²⁺, have?

• 10

• 12

• 14

• 16

What is the electronic configuration of a nitride ion, N³⁻?

• 2, 5

• 2, 8

• 2, 8, 8

• 2, 7

How many electrons are in the outer shell of a chlorine atom before it forms a chloride ion?

• 6

• 7

• 8

• 9

What is the electronic configuration of a chloride ion, Cl⁻?

• 2, 8, 7

• 2, 8, 8

• 2, 8, 6

• 2, 8, 5

How many electrons does a sulfur ion, S²⁻, have?

• 16

• 18

• 20

• 22