Chemistry - PERIODIC TABLE Question with Solution | TestHub
ChemistryPERIODIC TABLEIonisation Energy,Medium2 minQB
ChemistryMediumsingle choice
Which element has the smallest first ionization energy? (Atomic no.: , )
Options:
Answer:
B
Solution:
Mg and P has stable full-filled 3s orbital and half-filled 3p orbital, respectively. Thus, both of them have higher ionization energies. Among Al and Si, Si has a higher effective nuclear charge; therefore, it will have a higher ionization energy than Al. Al will thus have the least ionization energy.
Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Ionisation Energy,
⏱ 2mℹ️ Source: QB
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