Question

Write the atomic number, name & symbol of element present in third period & fourteenth group of the periodic table​

Answer 1

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Explanation:

Thus, the 3rd period ends with the element with Z = 18(argon) i.e., the element in the 18th group of the third period has Z = 18. Hence, the element in the 17th group of the third period has atomic number Z = 17 ,chlorine(Cl) with atomic mass 35.453, which is a p block element