(A) Na2[B4O3(OH)4].6H2O
(B) Na2[B4O5(OH)4].6H2O
(C) Na2[B4O5(OH)4].8H2O
(D )Na2[B4O6(OH)2].8H2O
The structure of
Borax is Na2[B4O5(OH)4].8H2O.
Hence option (C) is the correct answer for details click on link given below
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