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Q.

Valency of sulphur in ${Na}_{2} S_{2} O_{3}$ is

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a

Six

b

Three

c

Two

d

Four

answer is A.

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Detailed Solution

Valency of ${Na}_{2} S_{2} O_{3}$ s supposed to be x,

then $2 + 2 x + (- 6) = 0, 2 x - 4 = 0, x = 2$

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Valency of sulphur in Na2S2O3 is