Borax is heated in a bunsen burner flame with a compound X on a loop of platinum wire. A blue coloured bead of compound Y is formed. Identify X and Y

Question

Borax is heated in a bunsen burner flame with a compound X on a loop of platinum wire. A blue coloured bead of compound Y is formed. Identify X and Y (A) (X)-Ca ( BO 2)2 1, (Y)-CoO (B) (X)-CoO, (Y) - Co ( BO 2)2 (C) (X)-CoO 2, (Y) - Co ( BO 2)2 (D) (X)-CoO , (Y) - CoBO2

Tardigrade Admin · Accepted Answer

The borax bead test can be used to identify transition metals as their metaborates have characteristic colours. When borax is heated in a bunsen burner flame with

C o O (X)

on a loop of platinum wire, a blue coloured

C o (B O_{2})_{2} (Y)

bead is formed.
Therefore,

X

and

Y

are

C o O

and

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

respectively

Q. Borax is heated in a bunsen burner flame with a compound $X$ on a loop of platinum wire. A blue coloured bead of compound $Y$ is formed. Identify $X$ and $Y$

$(X) - C a (B O_{2})_{2} 1, (Y) - C o O$

$(X) - C o O, (Y) - C o (B O_{2})_{2}$

$(X) - C o O_{2}, (Y) - C o (B O_{2})_{2}$

$(X) - C o O, (Y) - C o B O_{2}$

Q. Borax is heated in a bunsen burner flame with a compound X on a loop of platinum wire. A blue coloured bead of compound Y is formed. Identify X and Y

(X)−Ca(BO2​)2​1,(Y)−CoO

(X)−CoO,(Y)−Co(BO2​)2​

(X)−CoO2​,(Y)−Co(BO2​)2​

(X)−CoO,(Y)−CoBO2​

Q. Borax is heated in a bunsen burner flame with a compound $X$ on a loop of platinum wire. A blue coloured bead of compound $Y$ is formed. Identify $X$ and $Y$

$(X) - C a (B O_{2})_{2} 1, (Y) - C o O$

$(X) - C o O, (Y) - C o (B O_{2})_{2}$

$(X) - C o O_{2}, (Y) - C o (B O_{2})_{2}$

$(X) - C o O, (Y) - C o B O_{2}$