What do you mean by valence electrons? Find out the number of valence electrons in carbon, hydrogen, and oxygen.

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Solution

The electrons present in the outermost shell of an atom is known as valence electrons.

Valence electrons in elements:

Electronic configuration of elements Number of valence electrons

C (6): 2, 4 4

H (1): 1 1

O (8): 2, 6 6

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The number of valence electrons in the atoms of carbon, nitrogen and oxygen respectively are __________.

In an oxygen atom, the number of electrons in the valence shell is___.

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Electronic configuration of elements	Number of valence electrons
C (6): 2, 4	4
H (1): 1	1
O (8): 2, 6	6