In borax (Na_(2)B_(4)O_(7).10H_(2)O) the number of B-OH bonds present

1.	In borax (Na_(2)B_(4)O_(7).10H_(2)O) the number of B-OH bonds present is :
Answer» five four three two Solution :Correct formula of borax is , `Na_(2)[B_(4)O_(5)(OH)_(4)].8H_(2)O` Thus, NUMBER of `B-OH` BONDS = 4.

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