Question

the correct decreasing order of atomic size amongst sr,mg,ca is

Answer 1

4. is d crct option
atomic size increases across d group
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Answer 2

The correct option among the four options is d. Its so because mg is in group 2 period 2, ca is in group 2 period 3, sr is in group 2 period 4 so as we move down the group the period number increases as a result the number of shells in the atom increases so the size of the atom increases...