Hey there!:
* For 2p subshell :
n = 2, l =1, ml = -1, 0, +1
* for 5d subshell,
n = 5, l = 2, ml = -2, -1, 0, +1, +2
Hope that helps!
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The answer is B. two chlorine atoms.
The chemical formula of the compound is BaCl2~
Single type of atom builds a single atom
