Answer
409.8k+ views
Hint: Screening effect is also known by the name shielding effect which can be explained as that phenomenon which occurs when the nucleus reduces the force of attraction on the valence electrons provided due to the presence of electrons in the inner shell.
Complete answer:
In a multi electron atom the electrons of the valence shell are attracted towards the nucleus and these electrons are also repelled by the electrons present in the inner shells. Because of this the actual force of attraction between the nucleus and the valence electrons is little bit decreased by these repulsive forces which act in the opposite directions.
This decrease in the force of attraction which was exerted by the nucleus on the valence electrons due to the presence of electrons in the inner shells is called screening effect or shielding effect.
The screening effect of d-electrons is less than that of p-electrons. We know that d and f electrons have a poor shielding effect as compared to s and p electrons. This is due to the reason that s and p electrons are close to the nucleus whereas d and f electrons are more away from the nucleus.
Thus we can say that option D is the correct answer.
Note:
The magnitude of the screening effect generally depends upon the number of inner electrons. Greater the number of inner electrons greater will be the value of the screening effect. The screening effect constant is represented by the symbol $\sigma $.
Complete answer:
In a multi electron atom the electrons of the valence shell are attracted towards the nucleus and these electrons are also repelled by the electrons present in the inner shells. Because of this the actual force of attraction between the nucleus and the valence electrons is little bit decreased by these repulsive forces which act in the opposite directions.
This decrease in the force of attraction which was exerted by the nucleus on the valence electrons due to the presence of electrons in the inner shells is called screening effect or shielding effect.
The screening effect of d-electrons is less than that of p-electrons. We know that d and f electrons have a poor shielding effect as compared to s and p electrons. This is due to the reason that s and p electrons are close to the nucleus whereas d and f electrons are more away from the nucleus.
Thus we can say that option D is the correct answer.
Note:
The magnitude of the screening effect generally depends upon the number of inner electrons. Greater the number of inner electrons greater will be the value of the screening effect. The screening effect constant is represented by the symbol $\sigma $.
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Bimbisara was the founder of dynasty A Nanda B Haryanka class 6 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)