Question

Deline valency. How is it calculated? Explain the formation of two ionic compounds and the two covalnt compound on the basis of valency
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Answer 1

Valency is defined as the combining capacity of the element. It is determined by the number of valence shell electrons present in the atom.

If the number of valence electrons is less than or equal to 4 so the valency is the same as the number of electrons present.

If the number of valence electrons is more than 4 then the valency is 8-(the number of valence shell electrons).

Example:

(1)Silicon has atomic number 14. The electronic configuration of silicon is 2, 8, 4. The number of valence electrons is 4. So the valency is 4.

(2)Oxygen has an atomic number 8. The electronic configuration is 2, 6. The valency is (8-6)=2.

Answer 2

Answer:

above is correct Explaination of ur question