The wavelength of an electron inoving in the 3rd
shell of hydrogen is
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Explanation:
r=a0*n²/Z
put a zero is equal to 52.9pm, n is equal to 3 and z is equal to 1
from above equation you can determine radius
mvr=nh/2π
mv=nh/2πr
from from this equation you can determine the momentum by putting radius from above equation
according to de Broglie equation
wavelength=h/mv
use above equation to determine the wavelength of electron
please ask if you have any doubt
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