Q

# Try this! - Atomic Structure - BITSAT

Element with electronic configuration $1s^{2}, 2s^{2}, 2p^{6}, 3s^{2}3p^{6}3d^{10},4s^{2}4p^{6}4d^{10}, 5s^{2}5p^{3}$ belongs to which group of the periodic table?

• Option 1)

3rd

• Option 2)

15th

• Option 3)

7th

• Option 4)

2nd

94 Views

As we learnt in

Aufbau Principle -

In the ground state of the atoms, the orbitals are filled in order of their increasing energies.

- wherein

Given configuration: $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6}4d^{10}5s^{2}5p^{3}$

Element of the above configuration belongs in p block and for p block elements, group no = valence electrons +10

= 5+10 = 15

Option 1)

3rd

Option 2)

15th

Option 3)

7th

Option 4)

2nd

Exams
Articles
Questions