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Thursday, August 6, 2020

Why the elements of the second row (first short period) show a number of differences in properties from other members of their respective families?

The differences in the properties of the first member of a group from those of the other members are due to 
(i) the smaller size of atom. 
(ii) presence of one inner shell of two electrons and 
(iii) absence of d – orbitals.

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