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599582316

Valency: If we move down a group, the number of valence electrons remains the same.

Valency: If we move down a group, the number of valence electrons remains the same.

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Size Width Height Mp
s 237 px 500 px 0.5
m 474 px 1000 px 2
l 949 px 2000 px 8
xl 5209 px 10978 px 15
vect 5209 px 10978 px -

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