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What Combination of These Atoms or Ions Have Complete Valence

Question 38

Multiple Choice

What combination of these atoms or ions have complete valence shells? He, I-, Pb2+, Mg2+, H-,Tl+


A) He, I-, Mg2+,H-
B) He, I-, Pb2+, Mg2+
C) Pb2+, Mg2+, H-, Tl+
D) He, Pb2+, H-, Tl+

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