Z effective decreases down a group. Then why would first group elements like Na,K and Rb have same Zeffective(2.2) except Lithium?

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Solution

z eff doesnt decreases down the group . it almost remains same. charge as well as radius is increasing.

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Similar questions

Give scientific reasons:

1. Atomic size increases down the group.

2. Metallic character decreases from left to right in a period.

3. Elements in the same group show same valency.

Why metallic character decreases across a period and increases down a group?

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