Pleas help me and please don’t use the answer for the internet.

Active transport of ions across the nerve cell membrane maintains a cell's resting potential. ... The sodium-potassium pump is a series of proteins embedded in the cell's membrane. It uses the energy of ATP to move sodium ions -NaK- out of the cell and potassium ions -KK- into the cell.

Explanation:

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

the answer is d. 74.02