Question

Define Valency by taking examples of silicon and oxygen​

Answer 1

Atomic number of silicon is 14. The electronic configuration of the element is – K=2, L=8,m=4. According to the electronic configuration the valency is +4 or -4 because silicon can either gain 4 electrons or lose 4 electrons because it is a noble gas. Hence, valency of silicon is 4.

Answer 2

$\huge \bigstar { \underline{ \mathtt{ \red{A}{ \pink{n}{ \color{blue}{s}{ \color{gold}{w}{ \color{aqua}{e}{ \color{lime}{r}}}}}}}}}★$

• The combining capacity of an atom is known as its valency. The number of bonds that an atom can form as part of a compound is expressed by the valency of the element.

$\bigstar\sf{\underline{Valency \: of \: silicon \: }}$

Atomic number of silicon is 14.

The electronic configuration of the element is – K=2, L=8,m=4.

• According to the electronic configuration the valency is +4 or -4 because silicon can either gain 4 electrons or lose 4 electrons because it is a noble gas.Hence, valency of silicon is 4.

$\bigstar\sf{\underline{Valency \: of \: oxygen}}$

Atomic number of Oxygen is 8.

Electronic configuration – K=2, L=6.

• According to the electronic configuration the valency is 6, but it is easy for oxygen to gain 2 electrons instead of loosing 6 electrons. Hence, the valency of oxygen is 2.