Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Consider a diagram showing the structures of CrO4 2- and Cr2O7 2- ions. If one of the tetrahedra in the dichromate ion structure is highlighted, what is the bond angle between the chromium atoms in the dichromate ion?
A
126°
B
109°
C
180°
D
90°
Correct Answer
Option A
Detailed Explanation
The dichromate ion, Cr2O7 2-, consists of two tetrahedra sharing one corner and has a Cr–O–Cr bond angle of 126° as given in the NCERT context.
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