" nents "A,B,C,D" and "E" have atomic number "9,11,17,12

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?

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group ?

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group ?

Elements A,B, C and D have atomic number 9,17,19,35 respectively. Choose the odd element-

Among the elements A,B,C and D having atomic numbers 9,10,11 and 12 respectively the correct order of ionisation energies is

Among the elements A, B, C and D having atomic numbers 7,8,9 and 12 the element having smallest size is _____