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Class XI Chemistry Atomic Structure 6

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Question 1

What should be the maximum number of lines obtained in the spectrum, if total number of energy levels are four?

Question 2

The characteristic X rays spectrum is due to

Question 3

Which statement does not form part of Bohr’s model of hydrogen atom?

Question 4

Uncertainty in position of a particle of 25 g in space is 10^-5m. Hence, uncertainty in velocity (ms^-1) is (Planck's constant h =6.6 x 10^-34 Js):

Question 5

Number of α-particles scattered at an angle θ in Rutherford's experiment are -

Question 6

A photon of 400 nm is absorbed by a gas and re-emits two photons. One re-emitted photon has wavelength 500 nm the other photon has wavelength(in nm) of

Question 7

The correct set of quantum numbers for the unpaired electron of chlorine atom is: (n, l, m respectively)

Question 8

The radii of two of the first four Bohr orbits of the hydrogen atom are in the ratio 1 : 4. The energy difference between them may be -

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Jun 9JEE & BITSAT