Fill in the blanks with appropriate words from the bracket: Covalent compounds are formed by sharing electrons pairs between non-metallic atoms. Non-metallic atoms having ____ valence electrons [4, 5, 6, 7] share one, two or three pairs of electrons respectively.

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Solution

Covalent compounds are formed by sharing electrons pairs between non-metallic atoms. Non-metallic atoms having 7,6 and 5 valence electrons share one, two or three pairs of electrons respectively.
As element with 5 valence electron will require 3 electron for octet completion while element with 6 valence electron will require 2 electron.

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