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Q.

Number of sigma bonds and pi bonds in ${Na}_{2} B_{4} O_{7} . 10 H_{2} O$ ?

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a

$0$ and 34

b

4 and 18

c

6 and 17

d

None of these

answer is A.

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Detailed Solution

Chemical formula of borax is Na₂B₄O₇·10H₂O.

Number of $σ$ bond $= 34$

Number of $π$ bond $= 0$

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