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What is the valency of chlorine?


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Solution

Valency

  • The valency of an atom refers to its ability to combine with other atoms.
  • The valency of an element determines the number of bonds that an atom can make as part of a complex.
  • The valence of an element is the number of hydrogen atoms that can mix with or replace one of the element's atoms (directly or indirectly).

Valency of Chlorine

  • Chlorine has an atomic number of 17.
  • Chlorine's electrical configuration is [Ne]3s23p5, which can also be represented as 2,8,7.
  • This demonstrates that chlorine's outermost shell has seven valence electrons.
  • If there are more than four valence electrons, the valency can be determined as follows: Valency=Valenceelectron-8
  • As a result, chlorine has a valency of 8-7, which is 1.

Hence, chlorine has a valency of 1.


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