NEET Chemistry Exceptions MCQ Question
Read the following statements and mark the incorrect statement.
No two electrons in an atom can have all the four quantum numbers same.
All the orbitals in a subshell are first occupied singly with parallel spins.
The outer electronic configuration of chromium atom is 3d⁴4s².
Lyman series of hydrogen spectrum lies in ultraviolet region.
Correct Answer
Detailed Explanation
The correct electronic configuration of chromium is 3d⁵4s¹ due to electron exchange energy and stability.
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