Question

in a covalent bond, electrons are __________. * 2 points
shared
lost
gained
destroyed

nacl is the chemical formula for what? * 2 points
water
chlorine gas
sodium chloride
sodium metal

in sodium chloride (nacl), which atom loses an electron? * 2 points
chloride
sodium
salt
neither

Explanation:

1. In a covalent bond, atoms share electrons to achieve a stable electron - configuration.
2. The chemical formula NaCl represents sodium chloride.
3. In sodium chloride, sodium (Na) has one valence electron and loses it to form a positive ion, while chlorine gains that electron.

Answer:

1. A. shared
2. C. sodium chloride
3. B. sodium