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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
Elements having valency ‘one’ are:
  1. Always metals.
  2. Always non-metals.
  3. Always metalloids.
  4. Either metals or non-metals.
✓

Answer

  1. Either metals or non-metals.

Explanation:

Elements with valency 1 can be either metals or non-metals. When an atom loses one electron to gain stability, it is a metal. When an atom gains an electron to complete its octet it is a non-metal.

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