Give the significance of octet rule. Explain why this rule is not vali

1.	Give the significance of octet rule. Explain why this rule is not valid for H and Li atoms.
Answer» i. Significance : Octet rule is found to be very useful : in explaining the normal valence of elements in the study of the chemical combination of atoms leading to the formation of molecule. ii. Octet rule is not valid for H and Li atoms. According to octet rule, during the formation of a chemical bond, each atom loses, gains or shares electrons so that it achieves stable octet (eight electrons in the valence shell). However, H and Li atoms tend to have only two electrons in their valence shell similar to that of Helium (1s²), which called duplet. Hence, Octet rule is not valid for H and Li atoms.

Give the significance of octet rule. Explain why this rule is not valid for H and Li atoms.

Answer»

i. Significance :

Octet rule is found to be very useful :

in explaining the normal valence of elements
in the study of the chemical combination of atoms leading to the formation of molecule.

ii. Octet rule is not valid for H and Li atoms.

According to octet rule, during the formation of a chemical bond, each atom loses, gains or shares electrons so that it achieves stable octet (eight electrons in the valence shell).

However,

H and Li atoms tend to have only two electrons in their valence shell similar to that of Helium (1s²), which called duplet.

Hence,

Octet rule is not valid for H and Li atoms.

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Give the significance of octet rule. Explain why this rule is not valid for H and Li atoms.

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