Equal number of sp2 and sp3 hybridized boron atoms
One terminal hydroxide per boron atom
A
Tetranuclear [B4O5(OH)4]2− unit
B
All boron atoms in the same plane
C
Equal number of sp2 and sp3 hybridized boron atoms
D
One terminal hydroxide per boron atom
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Solution
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The correct options are A Tetranuclear [B4O5(OH)4]2− unit C Equal number of sp2 and sp3 hybridized boron atoms D One terminal hydroxide per boron atom Correct formula of borax is Na2[B4O5(OH)4].8H2O.
Borax has tetranuclear. [B4O5(OH)4]2− unit.
Only two B atom lies in the same plane.
Two Boron are sp2 & two are sp3 hybridised.
One terminal hydroxide is present per boron atom.
Hence, options A, C and D are correct.
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