Question

Consider the following statements as they apply to quantum numbers. Decide if each statement is True or False.

Answer 1

Answer:

A. False

B. False

C. True

Explanation:

A. The three quantum numbers (n, l, and ml) define an atomic orbital. If n, the principal quantum number, has a value of 6 the maximum value of l is 6. FALSE. The first part is true. However, the maximum value of l is n-1. So, if n is 6, l can take values up to 5.

B. The principal quantum number, n, can have any integer value from 0 to infinity. For electrons in s, p, and d orbitals, the d electrons are the most shielded. FALSE. n can take positive integer values, that is, it cannot take the value 0. Usually, the d electrons are the most shielded.

C. The magnetic quantum number, ml indicates the orientation of the orbital in the space around the nucleus. TRUE. For instance, spheric s orbital has only 1 orientation (1 value for ml), whereas lobed p orbital can be oriented along the three axes (3 values for ml).