MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryPeriodic PropertiesPrevious Year Questions
Electronic configuration of an element X having atomic number 24 is (UP CPMT 2010)
Answer
A
Explanation
The electronic configuration of element X (atomic number = 24) is 2 2 6 2 6 1 5 1s ,2s 2p ,3s 3p 4s 3d . (one electron jumps from 4s-orbital to 3d-orbital to gain more stability) Hence, the electronic configuration of element X is 5 1 Ar 3d 4s .
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