Structure of Atom Quiz 7 – Punjab Meritorious School Preparation Portal

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The electronic configuration of element with atomic number 24 is :

What is the correct orbital designation of an electron with the quantum number, n = 4, l = 3, m = – 2, s = 1/2 ?

3s

4f

5p

6s

The energy ratio of a photon of wavelength 3000Å and 6000Å is :

1 : 1

2 : 1

1 : 2

1 : 4

The orientation of an atomic orbital is governed by

Spin quantum number

Magnetic quantum number

Principal quantum number

Azimuthal quantum number

The orbitals are called degenerate when

they have the same wave functions

they have the same wave functions but different energies

they have different wave functions but same energy

they have the same energy

The number of spherical nodes in 3p orbitals are

one

three

two

None of these

The angular speed of the electron in nth orbit of Bohr hydrogen atom is

The uncertainties in the velocities of two particles, A and B are 0.05 and 0.02 ms–1 respectively. The mass of B is five times to that of the mass of A. What is the ratio of uncertainties 〖∆x〗_A/〖∆x〗_B in their positions?

2

0.25

4

1

The order of filling of electrons in the orbitals of an atom will be

3d, 4s, 4p, 4d, 5s

4s, 3d, 4p, 5s, 4d

5s, 4p, 3d, 4d, 5s

3d, 4p, 4s, 4d, 5s

Question is mentioned below :

4

5

6

3

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