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King George Medical College Pursuing
Bachelor of Dental Surgery (B.D.S.)
Iradat Nagar Lucknow, Lucknow, India - 226020
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Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
1
Board
CBSE
Subjects taught
Physics, Biology, Chemistry
Taught in School or College
Yes
Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
1
Board
CBSE
Subjects taught
Physics, Biology, Chemistry
Taught in School or College
Yes
Answered on 31/10/2018 Learn CBSE - Class 11/Chemistry/Classification of Elements and Periodicity in Properties
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When we go from left to right or across the period radius will decrease bcz increase in atomic no. Cause increase in electron in same shell. So effective nuclear charge of nucleus will increase will cause more attraction of the outermost shell electron. As result more attraction cause more closer of outermost shell electron which decrease the size.
However when we go from up to down increase in size or radius bcz there is change in shell no. As a result effective nuclear charge will not compensate as much as shell no. Increase.
So less effective nuclear charge bcz more screening effect of innermost electron and also great increase in shell no. So less attraction & great increase in shell no. Will increase the size or radius
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Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
1
Board
CBSE
Subjects taught
Physics, Biology, Chemistry
Taught in School or College
Yes
Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
1
Board
CBSE
Subjects taught
Physics, Biology, Chemistry
Taught in School or College
Yes
Answered on 31/10/2018 Learn CBSE - Class 11/Chemistry/Classification of Elements and Periodicity in Properties
Ask a Question
Post a Lesson
When we go from left to right or across the period radius will decrease bcz increase in atomic no. Cause increase in electron in same shell. So effective nuclear charge of nucleus will increase will cause more attraction of the outermost shell electron. As result more attraction cause more closer of outermost shell electron which decrease the size.
However when we go from up to down increase in size or radius bcz there is change in shell no. As a result effective nuclear charge will not compensate as much as shell no. Increase.
So less effective nuclear charge bcz more screening effect of innermost electron and also great increase in shell no. So less attraction & great increase in shell no. Will increase the size or radius
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