What valencies will be shown by the elements A, B, C, D and E having atomic number 2, 4, 8, 10 and 13 respectively.

Academic Chemistry NCERT Class 9

Elements	Atomic no.	No. of protons	Electronic configuration	Valence electrons	Valency
A	2	2	2	2	0
B	4	4	2, 2	2	2
C	8	8	2, 6	6	2
D	10	10	2, 8	8	0
E	13	13	2, 8, 3	3	3

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Updated on: 10-Oct-2022

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