Which of them is a property of lanthanides?

High ionization energies

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Low ionization energies

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Colour

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None of the above

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Solution

The correct options are
B Low ionization energies
C Colour
Lanthanides have low ionization energy due to big size, and show colours due to f-f transition of electrons.

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Similar questions

Element	First Ionization Energy (kJ/mol)
Lithium	520
Sodium	496
Rubidium	403
Cesium	376

H^{+}

N a H C O_{3}

H^{+}

O H^{-} i o n

H C O_{3}^{-} + H_{2} O i o n i z a t i o n ⇋ C O_{3}^{2 -} + H_{2} O

H C O_{3}^{-} + H_{2} O i o n i z a t i o n ⇋ H_{2} C O_{3} + O H^{-}

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