Answer:
helium hydrogen
Explanation:
lithium beryllium bottom carbon
The alkali metals are first column, alkali earth 2nd, halogens 2nd to last, and noble gases last. Hope it helps!
as a heterogeneous mixture
Explanation:
because I just know that it is
Well electrons are like electricity well it is partly if it went 3 sub levels the electrons would blow up some electricty<span />
I don’t know this, so I did research, so here! This is from a website called “Quora”, btw!
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