In the borax bead test of $C o^{2 +}$ , the blue colour of bead is due to the formation of:

B_{2} O_{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

{C o}_{3} B_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C o {({B O}_{2})}_{2}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C o O

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $C o {({B O}_{2})}_{2}$
On heating with a colored salt, the glassy bead forms a colored metaborate in an oxidizing flame.
The blue colour in the test of $C o^{2 +}$ is due to cobalt metaborate ( $C o (B O_{2})_{2}$ ).

Hence, option C is correct.

Suggest Corrections

Similar questions

{C o}^{2 +}

(N a {B O}_{2} + B_{2} O_{3})

Join BYJU'S Learning Program