In \( \left[\mathrm{B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{4}\right]^{2-} \), the number of boron a...

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In \( \left[\mathrm{B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{4}\right]^{2-} \), the number of boron atoms having an octet of electrons is:
(A) 0
(B) 1
(C) 2
(D) 4
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