The reason behind the lower atomic radius of Ga as compared to Al is
Chemistry · JEE Main · NTA Exams — p-Block Elements
The reason behind the lower atomic radius of Ga as
compared to Al is
compared to Al is
- poor screening effect of d-electrons for the outer
electrons from increased nuclear charge - increased force of attraction of increased nuclear
charge on electrons - increased ionisation enthalpy of Ga as compared to
Al - anomalous behaviour of Ga.
Answer
(A) poor screening effect of d-electrons for the outer electrons from increased nuclear charge
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