What happens when nitrogen fills its valence shell? a) three electrons are lost, making n+3 b) three electrons are lost, making n-3 c) three electrons are gained, making n-3 d) three electrons are gained, making n+3

Option C = three electrons are gained, making N⁻³

Explanation:

Nitrogen is present in group 5A.

Its atomic number is seven.

It have five valance electrons.

Its electronic configuration is N₇ = [He] 2s² 2p³

In order to complete the valance shell or 2p subshell nitrogen must gain three more electrons.

When an atom gain the electrons anions are formed and negative charge is created on it.

When an atom lose its valance electrons cation is formed and positive charge is created.

That's why when nitrogen gain three electrons to complete the valance shell N⁻³ is formed.

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.