Can anyone help me with my physics question?

Question

please include a percentage on how sure you are

For an atom to become chemically stable,

A. the valence shell should contain at least three electrons.

B. all eight valence electron orbits should be filled or completely taken away.

C. five electron orbits should be filled.

D. the number of protons should equal the number of neutrons.

Gaining two electrons results in a charge of

A. +1

B. 0

C. -1

D. -2

What is an ionic bond?

A. An ionic bond occurs when similarly charged ions come together in order to balance to a charge of zero.

B. An ionic bond occurs when oppositely charged ions come together in order to balance to a charge of zero.

C. An ionic bond occurs when similarly charged ions come together and create imbalance.

D. An ionic bond occurs when oppositely charged ions come together and create imbalance.

Answer 1

1. B--100%

2. D--assuming the charge was already 0. 100%

3. B--100%

Answer 2

1. B 90%

2. D 100%

3. B 100%

Answer 3

1. B 90%

2. D 100%

3. B 90%  (could be D)