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Class XI Chemistry Atomic Structure 5

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Question 1

The electrons identified by quantum numbers n and l :
(a) n = 4, l = 1 (b) n = 4, l = 0 (c) n = 3, l = 2 (d) n = 3, l = 1
Can be placed in order of increasing energy as :

Question 2

Which of the following sets of quantum numbers represents the highest energy of an atom?

Question 3

In an electronic transition atom cannot emit

Question 4

Calculate the wavelength of a soft ball of mass 100g travelling at a velocity of 35m/s?

Question 5

If the ionisation potential of hydrogen is 13.6 volt, the energy required to remove an electron from the second orbit of hydrogen atom is

Question 6

Who modified Bohr’s theory by introducing elliptical orbits?

Question 7

Rutherford explained the position of electrons in atom but this did not match with which of the following theories which then led to the disapprovance of his model .

Question 8

At temperature T, the average kinetic energy of any particle is

. The de Broglie wavelength follows the order:

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Sep 26JEE & BITSAT