Topic: Structure of Atom, Test No.: 03, Total MCQs: 10
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a-particles, b-particles and g-rays are all having same energy. Their penetrating power in a given medium in increasing order will be [NEET 2013]
b, g, a
g, a, b
a, b, g
b, a, g
Which of the following is correct?
1H1 and 2He3 are isotopes
6C14 and 7N14 are isotopes
19K39 and 20Ca40 are isotones
9F19 and 11Na24 are isodiaphers
Which of the following is not permissible?
n = 4, l = 3, m = 0
n = 4, l = 2, m = 1
n = 4, l = 4, m = 1
n = 4, l = 0, m = 0
Which of the following pair of ions have same paramagnetic moment?
Which of the following statements does not form a part of Bohr's model of hydrogen atom?
Energy of the electrons in the orbit is quantised
The electron in the orbit nearest the nucleus has the lowest energy
Electrons revolve in different orbits around the nucleus
The position and velocity of the electrons in the orbit cannot be determined simultaneously
Which one of the following expressions represent the electron probability function
Which one of the following has unit positive charge and 1 amu mass?
None of these
Which one of the following statement is not correct?
Rydberg's constant and wave number have same units
Lyman series of hydrogen spectrum occur in the ultraviolet region
The angular momentum of the electron in the ground state hydrogen atom is equal to h/2p
The radius of first Bohr orbit of hydrogen atom is 2.116 × 10–8 cm.
Which one of the followings sets of quantum numbers represents the highest energy level in an atom?
n = 4, l = 0, m = 0, s = + 1/2
n = 3, l = 1, m = 1, s = + 1/2
n = 3, l = 2, m = -2, s = + 1/2
n = 3, l = 0, m = 0, s = + 1/2
Which transition in the hydrogen atomic spectrum will have the same wavelength as the transition, n = 4 to n = 2 of He+ spectrum?
n = 4 to n = 3
n = 3 to n = 2
n = 4 to n = 2
n = 2 to n = 1
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