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AP EAMCET202018 Sep 2020Evening ShiftChemistrys Block ElementsActual

Choose the alkali metal with highest reactivity among the following

Options

  1. ACs
  2. BLi
  3. C( Na )
  4. D( Rb )

Correct answer

A. Cs

Step-by-step solution

Among alkali metals (group-1), Cs is most reactive because of its lowest ionisation energy (1E, or ( _i H₁ )) Note ( Fr ) is not considered as it is radioactive.

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