Write the atomic number of the element present in the third period and seven group of the periodic table

Write the atomic number of the element present in the third period and

1.	Write the atomic number of the element present in the third period and seven group of the periodic table
Answer» he atomic number of the element PRESENT in the THIRD period and seventeenth group of the periodic table. ... 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.