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s-Block Elements: Alkali metals MCQ

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Alkali metalsEasyQuestion 880001

Question

Which of the following is NOT a property of alkali metals (Group 1)?
  1. A
    They have high ionisation energy
    Correct
  2. B
    They are soft metals
  3. C
    They react with water
  4. D
    They form +1 ions

Correct answer

They have high ionisation energy

Explanation

Alkali metals have the LOWEST ionisation energies in their periods (they readily lose one electron to form M⁺). They are soft, have low melting points, and react vigorously with water: 2M + 2H₂O → 2MOH + H₂↑.

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