Question:

Match the LIST-I with LIST-II: 

 


Choose the correct answer from the options given below :

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Remember that the octet rule applies to molecules where atoms aim to achieve 8 electrons in their outer shell. However, molecules with an odd number of electrons or those with more than 8 electrons on the central atom do not strictly follow this rule.
Updated On: Mar 17, 2025
  • A-IV, B-II, C-I, D-III
  • A-III, B-II, C-I, D-IV
  • A-IV, B-I, C-III, D-II
  • A-II, B-IV, C-III, D-I
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The Correct Option is A

Solution and Explanation

(A) Molecules obeying octet rule: Molecules like CO2 and CCl4 obey the octet rule, where each atom completes its octet. Hence, A corresponds to IV. 
(B) Molecules with incomplete octet: Molecules such as BCl3 and AlCl3 have an incomplete octet on the central atom. Hence, B corresponds to II.
(C) Molecules with incomplete octet with odd electron: NO and NO2 have an odd number of electrons and an incomplete octet. Hence, C corresponds to I. 
(D) Molecules with expanded octet: Molecules like H2SO4 and PCl5 have an expanded octet, which means the central atoms have more than eight electrons. Hence, D corresponds to III. Thus, the correct matching is A-IV, B-II, C-I, D-III.

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