Question

Read the following statements and mark the incorrect statement.

• A. No two electrons in an atom can have all the four quantum numbers same
• B. All the orbitals in a subshell are first occupied singly with parallel spins
• C. The outer electronic configuration of chromium atom is $3d^{4}4s^2$
• D. Lyman series of hydrogen spectrum lies in ultraviolet region

Answer 1

Answer: (C)

The outer electronic configuration of chromium atom is $3d^{5}4s^1$.