The valency of nitrogen in nitrogen dioxide is:

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Solution

The correct option is D 4
$(D)$ $4$

$S o l .$ let the valency of nitrogen in be $x$ .
valency of oxygen = $- 2$
For $N O_{2}$ it will be ,
$x + 2 \times (- 2) = 0$
$x = + 4$
Hence, the valency of nitrogen in $N O_{2}$ is $+ 4$ .

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The valency of nitrogen in $N_{2}$ molecule is.............

Complete the following statements by selecting the correct option :

(a) The formula of a compound represents

(i) an atom (ii) a particle

(iii) a molecule (iv) a combination.

(b) The correct formula of aluminium oxide is

(i) AIO $_{3}$ (ii) AIO $_{2}$ (iii) AI $_{2}$ O $_{3}$

(i) one (ii) two

(v) three (iv) four.

What is the valency of Nitrogen in $N O_{2}$ ?

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