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Grade: 12

                        

Which of the following has the smallest radius? A P B S C C l D C l − E S 2 −

2 months ago

Answers : (2)

Vikas TU
13786 Points
							
Dear student 
As you go across a period, electrons are added to the same energy level.  At the same time, protons are being added to the nucleus.  The concentration of more protons in the nucleus creates a higher effective nuclear charge.  In other words, there is a stronger force of attraction pulling the electrons closer to the nucleus resulting in a smaller atomic radius.Also, Anions are larger than their respective atoms as electron-electron repulsion forces them to spread further apart. 
Hence, Cl has the smallest radius.
2 months ago
Vikas Amritiya
askIITians Faculty
158 Points
							
 
Dear student 
As you go across a period, electrons are added to the same energy level.  At the same time, protons are being added to the nucleus.  The concentration of more protons in the nucleus creates a higher effective nuclear charge.  In other words, there is a stronger force of attraction pulling the electrons closer to the nucleus resulting in a smaller atomic radius.Also, Anions are larger than their respective atoms as electron-electron repulsion forces them to spread further apart. 
Hence, Cl has the smallest radius.
2 months ago
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