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.

s>p>d

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p>s>d

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d>p>s

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none of the above

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Solution

The correct option is A s>p>d
Order or shielding effect is $s > p > d > f$ .

This is because $s$ is near to nucleus, so it will shield more the nuclear charge.

As $Z_{e f f} = Z - s h i e l d i n g c o n s t a n t$

Hence, the correct option is $A$

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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.

Q. 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.
Ionization energy is not influenced by :

Q. Screening effect of inner shells decreases the effective nuclear charge. The order of screening effect of subshells is

s > p > d > f

. With respect to the above facts, predict the gradation of atomic size in lanthanide elements.

Q. The maximum number of electrons in s, p and d sub shells are:

Q. Screening effect of inner shells decreases the effective nuclear charge. The order of screening effect of subshells is s>p>d>f.
State whether the given statement is true or false.

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Arrange s,p and d sub-shells of a shell in the increasing order to effective nuclear charge (Zeff) experienced by the electron present in them.

The correct option is A s>p>dOrder or shielding effect is s>p>d>f.This is because s is near to nucleus, so it will shield more the nuclear charge.As Zeff=Z−shieldingconstantHence, the correct option is A

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.

The correct option is A s>p>d
Order or shielding effect is $s > p > d > f$ .

This is because $s$ is near to nucleus, so it will shield more the nuclear charge.

As $Z_{e f f} = Z - s h i e l d i n g c o n s t a n t$

Hence, the correct option is $A$