The nuclear charge actually experienced by an electron is termed as the effective nuclear charge. The effective nuclear charge Z* actually depends on the type of shell and orbital in which electron is actually present. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is $s > p > d > f$ (for the same value of $n$ )
The phenomenon in which penultimate shell electrons act as screen or shield in between nucleus and valence shell electrons and thereby reducing nuclear charge is known as shielding effect. The penultimate shell electrons repel the valence shell electron to keep them loosely held with the nucleus. It is thus evident that more is the shielding effect, lesser is the effective nuclear charge and lesser is the ionization energy.
Which of the following valence electron experience maximum effective nuclear charge?

4 s^{1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

4 p^{1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3 d^{1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 p^{3}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $2 p^{3}$
The effective nuclear charge experienced by an electron in the sub shell depends on the shielding faced by it due to inner electrons. Thus among given options, highest nuclear charge is experienced by $2 p^{3}$ sub shell as it is nearest to nucleus among the given options.

Suggest Corrections

Similar questions

Q. Due to inter electronic repulsion, an electron experiences less nuclear charge. It is, therefore, said that inner electronic shells electrons shield the nucleus. The actual nuclear charge experienced by an electron is called effective nuclear charge. If the electrons in K-shell shields the nucleus to the extent of 0.5 (say) each. What will be the wave number of the spectral line arising out of n=4 to n = 2 transition in He atom?

The unpaired electrons in Al and Si are present in 3p orbital. Which electrons will experience more effective nuclear charge from the nucleus?

Q. Arrange

s, p

and

d

sub-shells of a shell in the increasing order to effective nuclear charge

(Z_{e f f})

experienced by the electron present in them.

Q. The unpaired electrons in Al and Si are present in 3p orbital. In which element (Al or Si), electrons will experience more effective nuclear charge from the nucleus?

Question 22

Arrange s, p and d subshells of a shell in the increasing order of effective nuclear charge $(Z_{e f f})$ experienced by the electron present in them.

Join BYJU'S Learning Program

The correct option is D 2p3The effective nuclear charge experienced by an electron in the sub shell depends on the shielding faced by it due to inner electrons. Thus among given options, highest nuclear charge is experienced by 2p3 sub shell as it is nearest to nucleus among the given options.