Question

define octant rule . how it is helpful for explanation of chemical bond ?
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Answer 1

Explanation:

The rule states that Main Group elements form bonds in a manner that results in each atom having eight valence electrons in the highest energy level (sometimes called outer shell). ... Even with the exceptions, the Octet Rule is a valuable rule of thumb that helps scientists predict how atoms will bond to form compounds.

Answer 2

Answer:

The octant rule may be stated that substituents in the lower left and far upper right octants make a negative contribution to the cotton effect, substituents in the far lower right and far upper left make a positive contribution; substituents in any of the three planes do not make contribution.........