Chemistry, asked by anjammae5, 4 months ago

what is octect rule​

Answers

Answered by charisma47
2

Answer:

The octet rule is a chemical rule of thumb that reflects the observation that main group 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.

Answered by pinu05
0

According to octet rule, atom tends to have 8 electrons in the valence shell to attain stable configuration.

Significance: It explains the reason behind the chemical combination of different atoms to form ionic or covalent bond.

Limitations :

(1) Hydrogen with 1 electron attains stability by sharing, gaining or losing 1 valence electron. It does not need to complete octet to attain stability. Also, He has only 2 electrons and is stable.

(2) Incomplete octet: In certain molecules such as BeH

2

, BeCl

2

, BH

3

, BF

3

, the central atom has less than 8 electrons

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