Question

A. If an element with the valence configuration 4s²loses 2 electron(s), these electron(s) would be removed from the _______spdfs + ps + dp + d subshell(s).


B. An element with the valence electron configuration 2s²2p⁴would form a monatomic ion with a charge of ________ .
In order to form this ion, the element will _____lose/gain ___12345678 electron(s) from/into the _______spdfs + ps + dp + d subshell(s).

Answer 1

if the element has 4s2 configuration, looses 2 electrons, the electron will be lost from the outer shell that is 4s shell giving a 4s0 configuration having a filled 3p6

for the subdivison B, the ion which been formed will either have to loose 4 electrons or gain 2 electrons. Most preferred one is to gain 2 electrons, which is energetically favored. This electrons occupies 2p subshell giving a 2p6 electronic configuration.