Chemistry - Atomic Structure Question with Solution | TestHub
Which of the following statements are CORRECT ?
(I) A large number of orbitals are possible in an atom.
(II) Qualitatively these orbitals can be distinguished by their size, shape and orientation
(III) An orbital of smaller size means there is more probability of finding the electron near the nucleus
(IV) Each orbital is designated by four quantum numbers.
Options:
Answer:
Solution:
(I) Correct: An atom can have a large number of orbitals corresponding to different values of quantum numbers.
(II) Correct: Orbitals are qualitatively distinguished by their size, shape and orientation.
(III) Correct: Smaller orbital size means the electron has a greater probability density near the nucleus.
(IV) Incorrect: An orbital is specified by three quantum numbers (n,l,ml); the fourth (ms) specifies the electron.
Therefore, correct statements are I, II and III → D.
