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ICSE Class 9 Chemistry Question 25 of 39

Atomic Structure and Chemical Bonding — Question 37

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37
Question

Question 23

Explain:

(a) octet rule for formation of a chemical compound.

(b) duplet rule for formation of hydrogen.

Answer

(a) For an atom to achieve stable electronic configuration it must have 8 electrons in outermost orbit like that of noble gases other than Helium. This is known as Octet rule.

(b) For an atom of hydrogen to achieve stable electronic configuration it must have 2 electrons in the first shell [outermost] like that of noble gas Helium. So, two hydrogen atoms share one electron each to become stable. This is known as Duplet rule.