Arrange following in decreasing order of C–H bond energy order ?A a > b > c > d B b > d > c > a C b > d > a > c D c > a > d > b

To arrange the C-H bond energy order in decreasing order, we need to compare the bond strengths of the given options: a, b, c, and d.

Let's analyze each option:

Option A: a > b > c > d Option B: b > d > c > a Option C: b > d > a > c Option D: c > a > d > b

To determine the correct order, we need to consider the factors that affect bond strength. Generally, bond strength increases with increasing bond length and decreasing bond polarity.

Based on this information, we can make the following observations:

• Option A suggests that bond a has the highest strength, followed by b, c, and d. However, this contradicts the general trend, as shorter bonds tend to be stronger.

• Option B suggests that bond b has the highest strength, followed by d, c, and a. This order is consistent with the general trend, as shorter bonds are typically stronger.

• Option C suggests that bond b has the highest strength, followed by d, a, and c. This order is also consistent with the general trend.

• Option D suggests that bond c has the highest strength, followed by a, d, and b. This order contradicts the general trend, as shorter bonds are expected to be stronger.

Based on the analysis, we can conclude that the correct order of C-H bond energy is:

B) b > d > c > a