Question

Elements having 8 electrons in outer shells are called noble gases

Answer 1

yes elements having 8 electrons in the outer shells have received an octet that is a stable electronic configuration


those elements do not react with any other elements and thus are known as noble gases

example
neon
argon
xenon
krypton

Answer 2

HEY MATE HERE IS YOUR ANSWER!!!

Well, they don't all like 8, what leads to stability is "filled shells". The s shell is filled with 2, the p shell with 6, the d shell with 10, and the f shell with 14.

In each case, the numbers arise from the number of orbital angular momentum states (1 for s, 3 for p, 5 for d, 7 for f), with two electrons per level (because each electron can be in one of two spin angular momentum states).

So rows 1-3 in the periodic table tend to gain or lose electrons in order to obtain a filled outer shell, often an s plus a p, leading to 8, while in the d block and f block the same thing happens though the "filled shell" obtained might have 10 or 14 electrons.

In addition, in the heaver metals (center of the d block for example) it is just too costly in energy to gain or lose a large number of electrons so the atoms will form stable bonding arrangements with an intermediate number

HOPE THIS WILL HELP YOU.

THANKS❤

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