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Question
Which of the following are the correct reasons for anomalous behaviour of lithium?
(i) Exceptionally small size of its atom.
(ii) Its high polarising power.
(iii) It has high degree of hydration.
(iv) Exceptionally low ionisation enthalpy.
Short Note
Solution
(i) Exceptionally small size of its atom.
(ii) Its high polarising power.
Explanation:
Among the alkali metals, lithium has an exceptionally small size. Due to the small size of lithium and high nuclear charge it has high polarizing power.
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Anomalous Behaviour of Beryllium
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