Question

define valenacy? write the valency of (a) sodium (b) Cooper.​

Answer 1

$\huge \orange{ \overbrace{ \red{\underbrace \color{blue} {\underbrace \color{black}{\colorbox{lime}{ {\red \: {☘ Valency ☘ }}}}}}}}$

Answer 2

Answer:

Valency:-

Valency is the combining power of an element.Element in the same group in periodic table having same valency.The valency of an element related to how many electron in outershell.

Example:-

a) Copper -2,1

b) sodium- 1