What is the identity of element Q if the ion Q2+ contains 18 electrons?
A) Si
B) S
C) Ar
D) Ca
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A)Ni2P
B)Ni2PO4
C)Ni3P2
D)Ni3(PO4)2
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A)Na+,Si4+,and O2- ions.
B)Na+ ions and
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A)H
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