Question

why is helium called noble gas? hidspdtvmx​

Answer 1

Answer:

because it has complete octet of electrons in your valence shell , which make it stable.

Answer 2

Explanation:

The science. The noble gases, in order of their density, are helium, neon, argon, krypton, xenon and radon. They are called noble gases because they are so majestic that, in general, they don't react with anything. For this reason they are also known as inert gases.