What meant by 2)triad 2)octect

1.	What meant by 2)triad 2)octect
Answer» Answer: Triad, in chemistry, any of SEVERAL sets of three chemically similar elements, the atomic WEIGHT of one of which is approximately equal to the mean of the atomic weights of the other two. ... The triad was the earliest atomic-weight classification of the elements. The octet rule is a chemical rule of thumb that reflects the observation that elements tend to bond in such a WAY that each ATOM has eight electrons in its VALENCE shell, giving it the same electronic configuration as a noble gas Explanation:

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Triad, in chemistry, any of SEVERAL sets of three chemically similar elements, the atomic WEIGHT of one of which is approximately equal to the mean of the atomic weights of the other two. ... The triad was the earliest atomic-weight classification of the elements.

The octet rule is a chemical rule of thumb that reflects the observation that elements tend to bond in such a WAY that each ATOM has eight electrons in its VALENCE shell, giving it the same electronic configuration as a noble gas

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