NEETChemistryRedox Reactions
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The average oxidation state of bromine in Br ₃ O ₈ is + 16 3 , but the individual oxidation states of the bromine atoms are +6 , +4 , and +6 . Reason (R): In the linear structure of Br ₃ O ₈ , the terminal bromine atoms are bonded to three oxygen atoms each, while the central bromine atom is bonded
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- BBoth (A) and (R) are correct and (R) is the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
B. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
The chemical formula of tribromooctaoxide is Br ₃ O ₈ . Let the average oxidation state of Br be x . 3x + 8(-2) = 0 x = + 16 3 The structure of Br ₃ O ₈ is O ₃ Br - BrO ₂- BrO ₃ . The terminal bromine atoms are each bonded to three oxygen atoms (which are more electronegative), so their oxidation state is +6 . The central bromine atom is bonded to two oxygen atoms, so its oxidation state is +4 . Thus, the individual oxidation states are +6 , +4 , and +6 . The structural arrangement correctly explains the individual