1.

The ratio of areas of the electron orbits for the first excited state and the ground state for the hydrogen atom is .....

Answer»

`16:1`
`2:1`
`4:1`
`8:1`

SOLUTION :For first EXCITED state N = 2 and radius `r_(2) prop4`
For GROUND state n= 1 and radius `r_(1) prop1`
Now if A is area then `A PROP r^(2)`
`:.A_(2)prop r_(2)^(2) prop 16 and A_(1) prop r_(1)^(2) prop 1`
`:.(A_(2))/(A_(1))=(16)/(1) :.16:1`


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