The valency of neon is 0.
Explanation
- Neon (Ne) is a noble gas
- Its atomic number is 10
- Electronic configuration: 2, 8
Why valency is 0
- The outermost shell is completely filled (octet)
- It does not need to gain, lose, or share electrons
- Therefore, it is chemically inert (non-reactive)
Key Point
Valency depends on the ability to combine with other elements.
Since neon does not react, its valency is zero.
Examples
- Neon does not form compounds under normal conditions
- Used in neon lights due to its stability
Summary
Neon has a valency of 0 because its outer shell is completely filled, making it stable and non-reactive.