What is the chemical formula of Hydrogen sulphide?

H S

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H_{2} S

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H S_{2}

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H_{2} S_{3}

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Solution

The correct option is C $H_{2} S$
The valency of hydrogen is $+ 1$ and sulphur is $- 2$ so cross multiplying the valency we get $H_{2} S$ .

Hence the correct option is B.

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H_{2} S ⇌ H^{+} + H S^{-}

Write the chemical formulae of the following.

(a) Hydrogen sulphide

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(c) Sodium nitrate

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