WorksheetsBohr's Atomic Model
Total questions: 10
Worksheet time: 21mins
The following figure shows lines in the visible region of a spectrum of hydrogen atom. Which of the following is the transition of electron between levels of energy that gives rise to line W?
n=2 to n=1
n=3 to n=2
n=3 to n=1
n=4 to n=2
In a line spectrum of emission of hydrogen atom, how many lines can be observed if the electrons transit within n=4 and n=1?
3
4
5
6
Line corresponding to the shortest wavelength obtained in a hydrogen spectrum when the electron drops from
n=2 to n=1
n=3 to n=1
n=4 to n=2
n=4 to n=1
Choose the transition of electrons involving the greatest energy change
n=4 to n=3
n=4 to n=1
n=4 to n=2
n=3 to n=1
What is the wavelength of the fourth line in the Balmer series?
410 nm
432 nm
486 nm
654 nm
Calculate the energy required to excite an electron from n=2 to n=4
4.09 x 10-¹⁹ J
5.45 x 10-¹⁹ J
2.05 x 10⁶ J
2.74 x 10⁶ J
What is the frequency, s-¹, of a radiation with energy of 3.37 x 10-¹⁹ J per photon?
5.08 x 10-⁵⁴ s-¹
5.08 x 10¹⁴ s-¹
5.08 x 10-¹⁵ s-¹
5.08 x 10¹⁵ s-¹
What is the energy, in J, of one mole of photons emitted with a frequency of 6.336 x 10¹⁵ Hz?
4.20 x 10-¹⁸ J
3.96 x 10-¹⁷ J
2.53 x 10⁶ J
3.88 x 10¹⁴ J
Calculate the ionisation energy of hydrogen atom by using the Rydberg constant
1312 kJ/mol
3290 kJ/mol
4624 kJ/mol
5688 kJ/mol
In the hydrogen atom the transition that gives radiation in the visible region is
n=4 to n=1
n=3 to n=2
n=5 to n=3
n=6 to n=4
