Question

Why elements of group VIIIA are known as noble gases?​

Answer 1

Here is your answer ⤵⤵⤵

The noble gases are in Group 18 (8A). They are helium, neon, argon, krypton, xenon, and radon. They were once called inert gases because they were thought to be completely inert—unable to form compounds. ... Because this configuration is extremely stable as well as symmetrical, the noble gases are very unreactive.

HOPE IT HELPS YOU ☺☺ !!!

Answer 2

The noble gases are in Group 18 (8A). They are helium, neon, argon, krypton, xenon, and radon. They were once called inert gasesbecause they were thought to be completely inert—unable to form compounds. This is a reasonable belief because the noble gases have a complete octet, making them very stable and unlikely to gain or lose any electrons. However, some compounds have been formed with the larger elements of this group, like xenon tetrafluoride (XeF4). No normal compounds of helium, neon, or argon are stable at any but the coldest of temperatures.

Radon is dangerously radioactive; it causes cancer. It is so unstable that its radioactivity makes any chemical experiments with it nearly impossible.