Q7Multiple choice
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?
- (a)A and B
- (b)B and D
- (c)A and C
- (d)D and E
Show answer
(c) A and C
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?
(c) A and C