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Question

The number of valence electron/s present in the alkali metals is/are:
  1. 4
  2. 1
  3. 7
  4. 2


Solution

The correct option is B 1

Valence electrons are the electrons which occupy the outermost shell of an atom. These electrons participate in the formation of chemical bonds with other atoms. The elements of group 1 of the periodic table are called the alkali metals. All the alkali metals have a single electron in the outermost shell. Thus alkali metals have one valence electron.

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