Chem: Ions Intro

How many electrons would a Nitrogen atom gain/lose to become an ion If it has 5 valence electrons.

• lose 5

• gain 5

• lose 3

• gain 3

How many electrons would a Calcium atom gain/lose to become an ion if it has 2 valence electrons.

• lose 1

• gain 1

• lose 2

• gain 2

If an atom loses electrons, the charge will be positive.

• true

• false

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

• Br^-1

• Br⁺¹

• Br⁺⁷

• Br^-7

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

• +2

• -2

• +3

• 0

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

An ion is an atom that has gained or lost _______.

• protons

• neutrons

• electrons

An atom that gains electrons has a ____ charge.

• negative

• positive

Valence electrons are atoms of the outer most energy level, there is a maximum number of eight.

• True

• False

Atoms will gain or lose electrons in order to have a full outer energy level this is called the _____ rule.

• valence

• cation

• octet

• anion