Question

What is valency?how we do electronic configuration

Answer 1

Valency and Valence Electrons. The outermost orbital shell of an atom is called its valence shell, and the electrons in the valence shell are valence electrons. ... This table illustrates a number of interesting, and complicating, features of electron configuration.

Answer 2

Heya,

Answer to your question is:-

-» Combining capacity of an element is known as it's Valency.

-» The electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.

•For example:- Electronic configuration of Sodium(Na):-

Atomic no.=11
Electronic configuration=2,8,1

HOPE THIS HELPS YOU:-))
@Ashu