Multiple choice

Which of the following correctly defines the valency of an atom?

  1. The number of electrons in outer orbit of an atom

  2. The number of electrons in inner orbit of an atom

  3. The number of electrons, which an atom can donate, accept or share

  4. The number of shells present in an atom
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C Correct answer
Explanation

The valency of an atom is equal to the number of electrons, which an atom can donate, accept or share to attain the configuraton of inert elements.

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