How many B-O-B bond (s) (per molecule) i...

How many B-O-B bond (s) (per molecule) is/are present in compound which is used in Borax bead test ?

Verified by Experts

The correct Answer is:

`underset("Borax")(Na_(2)B_(4)O_(7)). 10H_(2)O` contains 5 B-O-B bonds

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Which gives blue bead in borax bead test ?

`Cr^(3+)`

`Co^(2+)`

`Ni^(2+)`

`Cd^(2+)`

`Fe^(2+)`

`Ni^(2+)`

`Co^(2+)`

`Mn^(2+)`

Zero

One

Four

Five