Multiple choice

Arrange the following s-block elements in increasing order of melting point:

  1. Sodium
  2. Potassium
  3. Magnesium
  4. Calcium

  1. 1 < 2 < 3 < 4

  2. 2 < 1 < 3 < 4

  3. 2 < 3 < 1 < 4

  4. 3 < 2 < 4 < 1

  5. 4 < 2 < 1 < 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct order of melting points is potassium (336 K) < sodium (371 K) < magnesium (924 K) < calcium (1124 K).

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