Question

To make a Br2 bond, how many total valence electrons are required?

1. 7
2. 14
3. 8
4. 16

Answer 1

2. 14

Step-by-step explanation:

To form Br₂ bond, a total of 14 electrons are needed.

Bromine is an element in the 7th group on the periodic table. It has 7 valence electrons.

• In forming the bromine gas, the two atoms of bromine shares 7 electrons each.
• These electrons are from their outermost shell.
• The outermost shell is the valence shell.
• So, two atoms donating 7 electrons gives 14 electrons.