1 A
2 C
3 B
4 D
hope this helps your pal abigail
Answer:
In chemistry and physics, a valence electron is an outer shell electron with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Explanation:
Answer: Frequency of 1 ÷ 2 = 0.5 Hz.
