Chemistry - PERIODIC TABLE Question with Solution | TestHub

ChemistryPERIODIC TABLEElectron Affinity, ElectronegativityMedium2 minQB

ChemistryMediuminteger

Find the number of elements for which first electron affinity has positive values.

P , N, Ne, O, Be

Answer:

Solution:

Positive EA means energy is absorbed (unfavorable to add e⁻)

Occurs in:

N (half-filled stable)

Be (filled s orbital stable)

Others (P, O, Ne):

P, O → negative EA

Ne → ~zero (noble gas)

Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Electron Affinity, Electronegativity

⏱ 2mℹ️ Source: QB

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