Question

Element of halogen family having largest atomic size astatine, chlorine,flourine,iodine

Answer 1

Answer:

Astatine.

Explanation:

The size of the nucleus increases down a group (F < Cl < Br < I < At) because the numbers of protons and neutrons increase. In addition, more energy levels are added with each period. This results in a larger orbital, and therefore a longer atomic radius.

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Answer 2

Answer:-

F < Cl < Br < I < At