The measure of a compounds likeliness to gain or lose an electron is its

Is its electrification

Explanation:

Electrification is defined as the ability to gain or lose different electrical charges, usually electrons, and occurs when a collision of subatomic particles occurs. There are three ways to electrify: by rubbing, by contact or by induction. It is necessary to take into account that in these three ways of electrification, the principles of charge conservation and the primary electrostatic rule are present.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

level 4 to level 2 : ))