Question

Write scientific reason on Elements belonging to the same group have the same valency​

Answer 1

Answer:

Elements belong to the same group have the same valency because the number of valence electrons in a group is same due to which the tendency of an atom to lose or gain electrons in order to attain nearest noble gas configuration is also same.

Answer 2

Answer:

the reason behind it is --> members of the same group have similar electronic configuration of valence shell

therefore same no. of electrons are free to be shared or donated

Hence their valency are same.

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