Chemistry Class-11: Chapter – 2. Structure of Atom – Part-4 (For CBSE, ICSE, IAS, NET, NRA 2023)

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II Multiple Choice Questions

In the following questions two or more options may be correct.

Questions 17:

Identify the pairs which are not of isotopes?

(i)

(ii)

(iii)

(iv)

Answer: (iii) , (iv)

Solution:

Questions 18:

Out of the following pairs of electrons, identify the pairs of electrons present in degenerate orbitals:

(i)

(ii)

(iii)

(iv)

Answer: (i) , (iv)

Solution:

Questions 19:

Which of the following sets of quantum numbers are correct?

Quantum Numbers
(i)
(ii)
(iii)
(iv)

Answer: (ii) , (iii)

Solution:

Questions 20:

In which of the following pairs, the ions are ?

(i)

(ii)

(iii)

(iv)

Answer: (i) , (iv)

Solution:

Questions 21:

Which of the following statements concerning the quantum numbers are correct?

(i) Angular quantum number determines the three dimensional shape of the orbital.

(ii) The principal quantum number determines the orientation and energy of the orbital.

(iii) Magnetic quantum number determines the size of the orbital.

(iv) Spin quantum number of an electron determines the orientation of the spin of electron relative to the chosen axis.

Answer: (i) , (iv)

Solution: