Question

(a) How are the following related?; (i) Number of valence electrons of different elements in the same group.; (ii) Number of shells of elements in the same period.; (b) How do the following change?; (i) Number of shells of elements as we go down a group.; (ii) Number of valence electrons of elements on moving from left to right in a period.; (iii)Atomic radius in moving from left to right along a period.; (iv) Atomic size down a group.(All India - 2012)

Answer 1

(a) 1.number of valence electron of different elements is equal in the same group.

2. number of shells of elements is equal in the same period.

(b) 1.As we move down a group, the number of shells of elements increase by 1.

2.on moving from left to right in a period, number of valence electron of elements will increase.

3.Atomic radius in moving from left to right along a period decrease.

4.Down the group atomic size increase

Hope, it will help you....

Answer 2

Explanation:

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