A. B2 -, C + particles all have ten extra nuclear electrons. The element symbol of a is () and the chemical formula of C2B is () of the compound composed of B and hydrogen The chemical formula is () to explain

A. B2 -, C + particles all have ten extra nuclear electrons,
The element symbol of a is (NE)
B is O, C is Na
The chemical formula of C2B is (Na2O)
The chemical formula of the compound composed of element B and hydrogen is (H2O or H2O2)

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