Assign oxidation number to the underlined elements in the followi… - Vidyadip

Question

Assign oxidation number to the underlined elements in the following species:

NaBH₄

✓

Answer

$\begin{matrix} +1&\text{x}&-1\\\text{Na}&\text{ B}&\ \text{ H}_4\end{matrix}$

Then, we have

1(+1) + 1(x) + 4(-1) = 0

⇒ 1 + x - 4 = 0

⇒ x = +3

Hence, the oxidation number of B is +3.

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