To have a complete outermost shell, the sodium atom would: * a-gain 7 electrons forming sodium atom
b-lose an electron forming sodium atom
c-gain 7 electrons forming sodium ion
d-lose an electron forming sodium ion

Sodium (Na) is an alkali metal which is very reactive, having only one valence electron.

in order to attain stability or to complete octet, he donates or loses its outermost electron.

after losing an electron Sodium forms a Cation ( positive ion ) due to more protons in atom as compared to electrons.

hence; the correct option will be...

D -lose an electron forming sodium ion

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.