The formula of borax is

Identify correct statement from the following i. H_(3)BO_(3) is a monobasic acid. ii. The correct formula of borax is Na_(2)[B_(4)O_(5)(OH)_(3)]8H_(2)O . iii. NaBH_(4) is a reducing agent.

The formula of borax should be written as Na_2[B_4O_5(OH)_4].8H_2O instead of Na_2B_4O_7. 10H_2O - explain this fact.

The correct formula of borax is

The correct formula of borax is

What is the formula of borax ?