Calculate the de-Broglie wavelngth of electron in next to inner orbit .

Explanation

Given `, n = 2`
Also `lambda = ( lambda ) /( m u_2) = ( h. nh)/( m. 2 pi e^2)`
` = (( 6.626 xx 10^(-27))^2 xx 2)/( 9. 108 xx 10^(-28) xx 2 xx 3. 14 xx ( 4 . 803 xx 10^10 )^2)`
` = 6.66 xx 10^(-8) cm`.