Which of the following options is not true about Borax?

Borax can be obtained from boric acid by neutralizing it with soda ash

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In Borax, boron shows both

s p^{2}

and

s p^{3}

hybridization

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In one molecule of Borax, there are 14

∠ O B O

bond angles

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When Borax is heated until red hot, a mixtutre of sodium meta-borate and boric anhydride is formed

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Solution

The correct option is C In one molecule of Borax, there are 14 $∠ O B O$ bond angles
When orthoboric acid reacts with soda ash ( $N a_{2} C O_{3}$ ), borax is produced.

$4 H_{3} B O_{3} + N a_{2} C O_{3} \to N a_{2} B_{4} O_{7} + C O_{2} + 6 H_{2} O$

There are $18 ∠ O B O$ bond angles in one molecule of Borax.

$N a_{2} B_{4} O_{7} .10 H_{2} O △ - \to N a_{2} B_{4} O_{7} △ - \to 2 N a B O_{2} Sodium meta-borate + B_{2} O_{3} Boric anhydride$

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B - - - - - O H

The states of hybridization of boron in boric acid ( $H_{3} B O_{3}$ ) and ( $B F_{3}$ ) are respectively

The state of hybridization of boron and oxygen atoms in boric acid $(H_{3} B O_{3})$ are respectively:

H_{3} B O_{3}

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