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7. Write scientific reasons
d. Elements belonging to the same group have the same valency.
in Chapter 2: Periodic Classification of Element by (5.4k points) | 18 views

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i. The electronic configuration of the outermost shell is same for all the elements belonging to the same group.
ii. So, the number of valence electrons for all the elements in a group is the same.
iii. The valency of an element is determined by the valence electrons.
Hence, elements belonging to the same group have the same valency.
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