
Call 1800-123-2003
"Smartindia is the best online tool for school students." Ms Deepa Chandran, Principal Anchal
"Smartindia is one of the best supplementary education tool for school students." Ms Pooja, Principal
nobel gases are called inert gases give reason |
Noble gases are inert for a simple reason - Their outer electron shells
are already full. Generally, the more empty the outer electron shell,
the more reactive the element. Helium has two(2) electrons, and is thus full, all the other noble elements has eight(8) electrons in it's outer electron shell, so they are also full. |