# Trick To Find Valency of an Element

Let’s Learn to calculate the Valency of an element quickly By using this Trick

## Trick To Find Valency of an Element:

Conditions for this trick to apply,
1. You must know the Valence Electron of that Element.
2. This trick is only suitable for S & P block elements
3. It won’t applicable for D block elements due to their variable Oxidation states.
4. Lower P block elements do not come under this trick because they’ll possess an Inert Pair Effect  Eg:  Lead, Tin, etc
5. Noble Gases don’t have any valency due to their octet stability (Outer Orbital Filled with Electrons)

## The trick to finding valency :

Let’s look at the trick to find the valency of an element. There are two formulae to calculate the Valency of elements.

• If Valence Electron is Equal to 1,2,3,4 then the Valency of the Element is also the same as the valence electron.
Eg: Carbon valence electron is
Carbon Electronic configuration – 1s²,2s²2p², then valence is 4
Therefore the Valency of Carbon is FOUR

• If the Valence Electron is more than 4,5,6,7 then the Valency of the Element is  (8 – Valence Electron)
Eg: Fluorine valence electron is
Fluorine Electronic configuration – 1s²,2s²2p⁵, then valence electron is 7
Therefore the Valency of Fluorine is (8 – Valence Electron)  {8-7} is ONE
Sample :

 Element Electron ArrangementsIn Orbitals Valence Electron Valency Of Element Li 1s²,2s¹ 1 1 Cl 1s²,2s²2p⁶,3s²3p⁵ 7 1 C 1s²,2s²2p² 4 4
So the Valency Of an Element depends on the Valence Electrons present in the Element.

### What is Valency?

Valency is the combining or Bonding Capacity of a Particular Element. It can be easily calculated by knowing the element’s Valence electrons.

#### What are Valence Electrons?

The Electrons present in the very outermost Orbital of the atom

#### Does Valency have Any Sign?

The valency of elements does not have any sign.
But the Valency of elements has Charge.

Positively Charged.(Loss of Electron)
• Negatively Charged.(Gain of electron)

### What is the valency of Aluminium ?

The valence electrons of Aluminium can be calculated by its electronic configuration 1s2 , 2s2 2p6 , 3s2 3p1 . The Valence electron is 3. Therefore valency of Aluminium is THREE

### What is the valency of Germanium ?

The valence electrons of Germanium can be calculated by its outer most electronic configuration is 4s2 4p2 . The Valence electron is 4 like Carbon . Therefore valency of Germanium is FOUR

Originally posted 2022-10-30 13:39:00.