Question

why arre electrons happy only when there r 8 electrons in their valence shell? if u answer to my satisfaction i owth i will mark u as brainliest​

Answer 1

Atoms tend to be most stable with a full outer shell (one which, after the first, contains 8 electrons), leading to what is commonly called the "octet rule". The properties of an element are determined by its outermost electrons, or those in the highest energy orbital. Row 3 elements on the left lose electrons to gain a full outer shell, elements on the right usually gain electrons to have 8 electrons in their outer shell. The basis of the octet rule is that atoms 'want' a full outer shell of electrons, i.e. they are most stable with a full outer shell.

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Answer 2

Answer:

The eight- electrons stability of an atom is stemmed from the stability of the noble gases or the elder name inert gases, which had long been known as unreactive or noble.