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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
s Block Elements

NTA Abhyas 2020 · Chemistry · s Block Elements

Sodium and potassium react with water much more vigorously than...

Sodium and potassium react with water much more vigorously than lithium because:Sodium and potassium react with water much more vigorously than lithium because:

Options

  1. ASodium and potassium have high values of hydration energy as compared to that of lithium.
  2. BSodium and potassium have higher melting point than that of lithium.
  3. CSodium and potassium have lower melting point than that of lithium.
  4. DSodium and potassium have lower hydration energy than that of lithium.

Correct answer

C. Sodium and potassium have lower melting point than that of lithium.

Step-by-step solution

When sodium and potassium react with water, the heat evolved causes them to melt, giving a larger area of contact with water, lithium on the other hand, does not melt under these conditions and thus reacts more slowly.

Sodium and potassium react with water much more vigorously than lithium because:
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