the carbon oxygen bond lengths in the formate nformation and the structures for
ID: 104973 • Letter: T
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the carbon oxygen bond lengths in the formate nformation and the structures for the ion. jn g iven this i Carbon-to-Oxygen Bond R a Predicet the ion given this i Bond Length, pm single double 143 123 109 triple carbon-to-oxygen bond lengths are 123 pm. Both carbon-to-oxygen bond lengths are 143 pm. Roth carbon-to-oxygen bond lengths are the same (8) C and intermediate between 143 pm and 123 pm. (D) and intermediate between 123 pm and 109 pm. Both carbon-to-oxygen bond lengths are the same a5. Among the given choices, which pair of elements will form the most polar bond? 1.0 2.1 2.2 3.2 (A) S and T (C) E and T (B) R and S (D) P and E 36. What are the bond H :O: angles, a and b, of the molecule represented by H H-CC-O-H this Lewis structure? (A) a is 109° and b is 109° (B) a is 109 and b is 120° (C) a is 120° and b is 109° (D) a is 90° and b is 180°Explanation / Answer
34. Both the C-O bonds are resonance stabilized in the anion having both single and double character. But none of them is purely single or double bond and hence they are intermediate of double and single bonds. Hence both the C-O bonds are same and intermediate between 143 pm and 123 pm. Option (c).
35. That bond will be the most polar where the electronegativity difference between the two atoms is maximum. Option C is correct where electronegativity is maximum (1.8) when them form bond.
36. As the carbon atom in angle a is sp3 hybridized, hence the bond angle will be 1090 and the carbon atom in the angle b is sp2 hybridized, hence the angle will be 1200. Option B is the correct answer.
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