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Q.

The valency of iron in $F e C l 3$ is:

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a

3

b

1

c

5

d

4

answer is B.

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Detailed Solution

Concept- In the Earth's crust, the iron element is the fourth most abundant element according to its mass. The core of the Earth is considered to be largely composed of iron with nickel and sulfur. The very common iron-containing ore is haematite.
Valency is the combining power of an element. It is also called valency. The number of hydrogen atoms or chlorine atoms or twice the number of oxygen atoms with which one atom of the element combines is defined as the valence of the element
Valency of

F e

in

F e C l 3

For

F e C l 3

,
let the valency of

F e = x

x + (− 1 + 3) = 0

X = 3

the valency of iron in

F e C l 3

is 3
Hence, the correct option is 2.

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