Grade 11Inorganic Chemistry

calculate the wavelength of radiation which excites the electron of hydrogen atom from ground state to forth energy level. Ionisation energy of hydrogen atom is 1312 kJ/mol

Siddharth

10 Years agoGrade 11

1 Answer

Umakant biswal

10 Years ago

@ siddharth
I will give you the approach on how to solve the problem , rest u have to calculate the value .
frst of all can u recall the formula ??
deltaE=-RH(1/nf square – 1/ni square )
apply that formula ,

and find out Rh , that is rydberg constant .

in thaat case take the value nf = infinity and ni = 1
once u get the value of rh then put that in the below equation
hV = – Rh(1/nf square – 1/ ni square )
that means u have to equate this value with hv .
and then find lambda which is the wavelength
take nf = 4 and ni = 1 , in the 2^nd case .
apply the formula for wavelength
v = c/lamba.

HOPE IT CLEARS YOUR DOUBT

ALL THE BEST ..