How the presence of d-orbitals affect size?

  • Thread starter johncena
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  • #1
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Main Question or Discussion Point

In my textbook , it is given that Atomic radius of Ga is smaller than that of Al due to presence of d-orbitals in Ga.
But how does the presence of d-orbitals reduces size?
 

Answers and Replies

  • #2
Char. Limit
Gold Member
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But it's not...

The atomic radius of Aluminum is 125 pm. The atomic radius of Gallium is 135 pm.
 
  • #3
131
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No, i refered wikipedia article...Atomic radius of aluminium is 143 pm
 
  • #5
131
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Which website is true ?I am really confused .:confused:
 

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