p-Block elementsHard

Question

The borax bead is chemically :

Options

A.B2O3
B.Na2B4O7
C.Na3BO3
D.B2O3 + NaBO2

Solution

Na2B4O7 . 10H2O 2NaBO2 + B2O3
                                                       (glassy bead)

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