1.

What is the ratio of radii of the first successive odd orbits of hydrogen atom?

Answer»

`9:1`
`1:9`
`1:3`
`3:1`

Solution :`r_n=0.529xxn^2A^(@)`
Successive first ODD ORBITS are 1 and 3
`(r_1)/(r_3)=(0.529xx1^2)/(0.529xx3^2)=(1)/(2)=1:9`


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