(C) In $Lithium$ $(Z=3)$,the $1s^2$ electrons shield the $2s$ electron from the full nuclear charge.Due to this shielding effect,the $2s$ electron exp

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less than the actual charge of $+3$

(C) In $Lithium$ $(Z=3)$,the $1s^2$ electrons shield the $2s$ electron from the full nuclear charge.Due to this shielding effect,the $2s$ electron experiences an effective nuclear charge $(Z_{eff})$ which is less than the actual nuclear charge of $ 3$.The formula is $Z_{eff} = Z - \sigma$,where $\sigma$ is the shielding constant.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Screening effect and effective nuclear charge

Easy

In $Lithium$,the $2s$ electron experiences a force of attraction exerted by the nucleus that is:

A
equal to the actual charge of $+3$
B
more than the actual charge of $+3$
C
less than the actual charge of $+3$
D
Can't predict

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Screening effect and effective nuclear charge

Explain the shielding effect with an example. Also,explain the $2s-2p$ approach in a group and a period.

Difficult

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If $Z_{eff}$ of $B$ is $2.6$,then the value of $Z_{eff}$ of oxygen and fluorine will be :-

Medium

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

Medium

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The core charge on oxygen is equal to $-$

Easy

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

Medium

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In $Lithium$,the $2s$ electron experiences a force of attraction exerted by the nucleus that is:

Similar Questions

Explain the shielding effect with an example. Also,explain the $2s-2p$ approach in a group and a period.

If $Z_{eff}$ of $B$ is $2.6$,then the value of $Z_{eff}$ of oxygen and fluorine will be :-

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

The core charge on oxygen is equal to $-$

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

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