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 $3d^{4}4s^{2}$

Answer 2

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