Teaching HSSC TGT 2023 Mock Test (Latest Pattern) Chemistry Classification of Elements and Periodicity in Properties Periodic Table
The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
1
A and B
2
B and D
3
A and C
4
D and E
5
Not Attempted