1...How many valence electron are in the outer shell of a Beryllium, BE, atom?

• 2
• 4
• 6
• 8

2...How many valence electrons are in the outer shell of a Group 7A element?

• 5
• 6
• 7
• 8

3...How many valence electrons are in the valence shell of Nitride ion, N-3?

• 5
• 6
• 7
• 8

4...How many electrons are shared between H and F in NF?

• 8
• 6
• 4
• 2

5...What is the total number of valence electron in the diatomic molecule nitrogen, N2?

• 6
• 8
• 10
• 12

6...What is the total number of shared electron pairs in the diatomic molecule oxygen, O2?

• 1
• 2
• 3
• 4

7...How many bonding electrons, BE, are shared in the bonds of sulfite ion, SO3 -2?, as shown in the diagram below?

• 6
• 8
• 18
• 20

8...How many non-bonding electrons, NBE, are shared in the bonds of sulfite ion, SO3 -2?, as shown in the diagram below?

• 6
• 8
• 18
• 20

9...How many bonding electrons are present in the Boron Trifluoride, BF3, molecule show below?

• 6
• 12
• 18
• 24

10...How many total valence electrons are present in the Boron Trifluoride, BF3, molecule show below?

• 6
• 12
• 18
• 24