Question

The correct set of quantum numbers for Rb (atomic no. 37) is

• A. 5, 0, 1/2
• B. 5, 1, 0, 1/2
• C. 6, 0, 1, 1/2
• D. 5, 1, 1, 1/2

Hint:

The quantum numbers for an electron in an atom correspond to the energy level, orbital type, and spin orientation.

Answer 1

The Correct Option is B

Step 1: Quantum Numbers for Rb.
Rubidium (Rb) has an atomic number of 37, so its electron configuration ends in the 5th shell (5s), meaning the principal quantum number is 5. The correct set of quantum numbers for its outer electron is \( 5, 1, 0, 1/2 \).
Step 2: Conclusion.
The correct answer is (B), \( 5, 1, 0, 1/2 \).