Q.

Borax contains tetra nuclear unit [B4O5 (OH)4]2- of 48 atoms. The correct formula of borax is:

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a

Na2 B4O5(OH)4⋅8H2O

b

a2 B4O5(OH)4⋅6H2O

c

Na2 B4O5(OH)4⋅5H2O

d

Na2 B4O5(OH)4⋅7H2O

answer is A.

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Detailed Solution

Na2 B4O5(OH)4⋅8H2O
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