what is the valency of helium

The valency of helium is:

0

Explanation

Helium (He) has the atomic number 2. Its electronic configuration is:

2

This means helium has a completely filled outermost shell called the duplet configuration. Since its outer shell is already stable, helium does not gain, lose, or share electrons.

Why helium has zero valency

• Stable electronic configuration

• No need to form chemical bonds

• Chemically inert in nature

Important point

Helium belongs to the noble gases group in the periodic table. Noble gases generally have very low reactivity because their outermost electron shells are complete.

Final Answer

The valency of helium (He) is:

0