Question

How does variation of atomic radii in a group ?​

Answer 1

Answer:

the number of energy levels increases as you move down a group as the number of electrons increases. each subsequent energy level is further from the nucleus than the last .therefore, the atomic radius increases at the group and energy level increases. as you move across the period the atomic radius decreases..

Explanation:

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Answer 2

Answer:

atomic radii of an element increases with an increase in atomic number from top to bottom in a group as we move down a group,the principle quantum number increases hence the atomic radii increases