The maximum number of electrons that can be accommodated in f subshell is

• 12

• 10

• 14

• 8

Which subshell has the highest energy?

• 1s

• 3p

• 3d

• 4s

The correct subshell electronic configurationof 29Cu is

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁹ 4s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹

Which sushell is not possible?

• 5p

• 6s

• 3f

• 3d

The correct electronic configuration of ₁₉K is

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹

• 1s² 2s² 2p⁶ 3s² 3p⁵ 4s²

• 1s² 2s² 2p⁶ 3s² 3p⁵ 3d²

The subshell common to all shells is

• s

• p

• d

• f

The subshell electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s^{2 .} It's atomic number is

• 19

• 15

• 20

• 4

The maximum number of electrons in M shell is

• 14

• 18

• 10

• 8

As the distance from the nucleus increases, the energy

• Decreases

• Increases

• First increases and then decreases

• No change

Modern periodic table is made on the basis of

• Atomic mass

• Atomic number

• Number of Neutrons

• Mass number