Structure of Atom Quiz 8 – Punjab Meritorious School Preparation Portal

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Which of the following represents correct set of the four quantum numbers for an electron in a 4d sub-shell ?

4, 2, 1, 0

4, 2, 1, – 1/2

4, 3, 2, + 1/2

4, 3, – 2, – 1/2

Which of the following is not permissible arrangement of electrons in an atom?

n = 5, l = 3, m = 0, s = + 1/2

n = 3, l = 2, m = – 3, s = – 1/2

n = 3, l = 2, m = – 2, s = – 1/2

n = 4, l = 0, m = 0, s = – 1/2

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 × 10³ ms ^–1. (Mass of proton = 1.67 × 10^–27 kg and h = 6.63 × 10^–34 Js)

0.40 nm

2.5 nm

14.0 nm

0.32 nm

Maximum number of electrons in a subshell of an atom is determined by the following:

The number of nodal planes ‘d’ orbital has

An electron has principal quantum number 3. The number of its (i) subshells and (ii) orbitals would be respectively

3 and 5

3 and 7

3 and 9

2 and 5

The de Broglie wavelength associated with a ball of mass 200 g and moving at a speed of 5 m/h, is of the order of 6.625 × 10^–34 Js

An element M has an atomic mass 19 and atomic number 9, its ion is represented by

The total number of atomic orbitals in fourth energy level of an atom is :

. The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1×10^–18 g cm s–1. The uncertainty in electron velocity is, (mass of an electron is 9 × 10^{– 28} g)

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