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Which List of Items Contains Only Ions

Question 8

Multiple Choice

Which list of items contains only ions?

A) CO₂,H₂O,Na⁺,H^-
B) Na⁺,H^-,Pb,Hg
C) Pb,Hg,CO₂,NaCl
D) Cl^-,Na⁺,Ca²⁺,NO₃^-
E) NaCl,NO,CO,NaOH

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