Chemistry
Grade-7
Easy

Question

Among the following, the element possessing a low melting point is

  1. Metals
  2. Non-metals
  3. Metalloids
  4. None of the above

hintHint:

The element with the lowest melting point is the one that has the highest atomic number.

The correct answer is: Non-metals


    • The element possessing a low melting point is Non-metal.
    • Non-metals that form discrete molecules have low melting points. This is because the intermolecular attraction is only about 5-10% of the strength of a covalent bond. Examples include oxygen, nitrogen, fluorine, white phosphorus, sulfur, and chlorine.
    • Non-metals that form network solids have higher melting points because covalent bonds must be broken in order to melt. Examples are boron, carbon, and silicon, not to mention germanium.

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