Please state the # of electrons that must be lost by atoms of each elements to aquire a noble gas?

Li
Mg
Al
Cs
Ba

Answer:
When the elements lose electrons, they don't actually become the Noble gas but simply have the same number of electrons only by losing their valence electrons.
Li 3 (-1 as Helium 2).
Mg 12 (-2 as Neon 10).
Al 13 (-3 as Neon 10).
Cs 55 ( -1 as Xenon 54).
Ba 56 (-2 as Xenon 54).
Li: 1
Mg: 2
Al: 3
Cs: 1
Ba: 2

Basically, metals lose electrons, and non-metals gain them...family 1 needs to lose 1, family 2 needs to lose 2, family 13 needs to lose 3, family 14 needs to gain OR lose 4 (metals lose, non-metals gain), family 15 gains 3, family 16 gains 2, and family 17 gains 1. Pretty much, leave out the transition elements and just count how far the element is from the noble gas...if that made any sense.

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