MEDIUMMCQ SINGLENEET ChemistryInorganic ChemistryPeriodic PropertiesPrevious Year Questions
The correct order of decreasing first ionisation potential is (UP CPMT 2013)
A.Ca✓ Correct
B.Cs
C.Ca
D.K
Explanation
Ionisation potential 1 atomic size The atomic size increases down the group but decreases across a period. The correct order of decreasing first ionisation potential is Ca K Rb Cs .
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