Question

3. What is valency? Give the valencies of the following oxygen
chlorine​

Answer 1

Explanation:

the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.

The valency of oxygen is -2.

Chlorine has seven valence electrons and can form only one bond

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Answer 2

Answer:

°°°°°The combining power, or affinity of an atom of a given element is determined by the number of hydrogen atoms that it combines with.°°°°°

Valency of Oxygen□ 2☆☆☆☆

Valency of Chlorine □-1☆☆☆☆