Question

Calculate Radius of first and third orbit of He+ ion.

Answer 1

Answer:

Explanation:hi! Hope this helps you:)

Bohr Radius =  

Z

R  

0

​  

n  

2

 

​  

 

    where,     R  

0

​  

=0.529  

A

˚

 

Now, first orbit of He  

+

 -> n=1,z=2.

                    R=  

2

R  

0

​  

 

​  

 =0.2645  

A

˚

 

    ∴ The radius of first orbit  in He  

+

 ion is 0.2645  

A

˚