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Variation of Valency

Define valenc...

Question

Define valency. What is the valency of the element with atomic number 8? What is the compound formed by this element with hydrogen?[3 Marks]

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Solution

Valency of an element can be defined as the number of electrons present in the valence shell that is/are available for bonding. Valency is the combining capacity of an atom. [1 Mark]

Valency of oxygen= 2. [1 Mark]

Oxygen combines with hydrogen to form the compound H2O. [1 Mark]

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