ionic bonding

Ion definition

An atom or group of atoms with positive or negative charge.

How do ions form

When atoms lose or gain electrons tho obtain a full outer shell - also gaining or losing charge.

Metal atoms_ electrons to become _

Lose, positively charged

Non metal atoms_ electrons to become _

Gain, negatively charged

Someth8ng is only an ion once is has

Bonded to gain/ lose electrons

Positive ions

Have more protons than electrons

Negative ions have

More electrons than protons

The amount if electrons an atom needs to gain or lose to form a full outer shell is based off of its

group number.

The attraction between oppositely chaged atoms is

Strong - forming a strong bond

Ionic bonds can be shown with

Dot and cross square bracket diagrams

The charge outside the bracket in a square bracket diagram is based off

How many electrons an atom needs to take / give to form a full outer shell.