Question

The elements F,Cl, and Br each having seven valence electrons are in period 2,3 and 4 respectively in the modern periodic table. Give reason and justify your answer in each case.
Q.) In which group of the periodic table should they be?
Q.) Which of them is least electro negative?
Q.) Which of them has the smallest Atomic Radius?​

Answer 1

Answer:

a). F, Cl , and Br -> 17th group of the periodic table

b). Br is least electronegative

c). F has smallest atomic radii

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