U1-2-6 - Ions

Question 1

Ion

Answer 1

A charged atom formed when an atom has gained or lost electrons

Question 2

Why do atoms form ions?

Answer 2

To gain a full outer shell of electrons.

This makes them more stable.

Question 3

Ions have the same electron arrangement as the nearest ….

Answer 3

Noble gas

Question 4

What is wrong with the charge shown?

Zn⁺²

Answer 4

Number must be written first, then sign:

Zn²⁺

Question 5

What is wrong with the charge shown?

^3–N

Answer 5

Charge must be on the right:

N^3–

Question 6

Explain why noble gases do not form ions.

Answer 6

They already have a full outer shell.

Question 7

The number of protons. Defines an element.

Answer 7

Atomic number

Question 8

Are metal ions positive or negative?

Answer 8

Positive

Question 9

Are non-metal ions positive or negative?

Answer 9

Negative

Question 10

The number of protons and neutrons

Answer 10

Mass number

Question 11

A charged atom formed when an atom has gained or lost electrons

Answer 11

Ion

Question 12

State the structure of noble gases.

Answer 12

Monatomic (exist as single atoms).