human biology

I hope someone can help me answer this queestion:

which of the following does NOT involve the sharing of electrons?

H20, HCl, NaCl, H2 or C6, H12, O6

and why?

The last three compounds you listed do not exist. Among the others, NaCl does not share electrons; the Cl completely takes away one electron from the Na, resulting in a purely electrostatic bond.

thanks drwls,
also i mistakingly put commas inbetween
C6H12O6 (glucose)

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asked by sophia

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