Question

The valency of cupric ion is_____

Answer 1

Definition of Valency

• Valency is the number of electrons at its outermost shell.
• Valency can also be defined as the number of electrons needed to complete the octet configuration or to fill the outermost shell.
• It is the number of electrons of an atom which uses to combine with atoms of another element.
• It is the combining power of an element.
• In an atom, the valence electrons are the electrons that can be used in combining with other atoms. they are lying in the valance shells(orbitals of the outermost shell).
• for example, Hydrogen has 1 electron, and its valency is one, one electron is needed to complete its outermost shell.

Cupric ion

• It is an ion of copper carrying a double positive charge. which means, copper gives 2 electrons to another element.
• So the valency of cupric ion is +2.

The valency of cupric ion is +2.