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Class XI Chemistry IQs on Atomic Structure

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Question 1

Match the type of series given in Column I with the wavelength range given in Column II and choose the correct option.

Question 2

According to Bohr's model of hydrogen atom, relation between principal quantum number n and radius of stable orbit is

Question 3

The increasing order (lowest first) for the values of e/m (charge/mass) for

Question 4

Given : The mass of electron is 9.11×10^-31 kg plank constant is 6.626 ×10^-34 Js, the uncertainty involved in the measurement of velocity within a distance of 0.1Å is :

Question 5

A 600 W mercury lamp emits monochromatic radiation of wavelength 331.3 nm. How many photons are emitted from the lamp per second?
(h = 6.626 x 10^-34 J-s; velocity of light = 3 x 10⁸ ms^-1)