Home
Class 11
CHEMISTRY
Assertion (A) . Energy of resonance hybr...

Assertion (A) . Energy of resonance hybrid is equal to the average of energines of all canonical forms.
Reason (R). Resonance hybrid cannot be presented by a single structure.

A

Both A and R are correct and R is the correct explanation of A.

B

Both A and R are correct but R is not the correct explanation of A.

C

Both A and R are not correct

D

A is not correct but R is correct

Text Solution

Verified by Experts

The correct Answer is:
D

Correct assertion : Energy of the resonance hybrid is less than the average of energies of all canonical forms.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion (A): The Heat of ionisation of water is equal to the heat of neutralistion of a strong acid with a strong base. Reason (R ) : Water ionises to a very small extent while H^(o+) ions from from an acid combine very rapidly with overset(Theta)OH from a base to form H_(2)O .

Assertion : In series LCR resonance circuit, the impedance is equal to the ohmic resistance. Reason : At resonance, the inductive reactance exceeds the capacitive reactance.

Assertion (A): The enthalpy of formation of HCI is equal to the bond energy of HCI . Reason (R ) : The enthalpy of formation and the bond enegry both involve formation of one mole of HCI from the elements.

Explain the resonance structure of benzene. What do you understand by resonance hybrid?

Assertion : Magnitude of average velocity is equal to average speed, if velocity is constant. Reson : If velocity is constant, then there is no change in the direction of motion.

Assertion (A) : Vegetable oils are fats which are present in plant cells in soluble form. Reason (R ) : Vegetable oils occur only in cells of embryo.

Assertion: At resonance, power factor of series L-C-R circuit is zero. Reason: At resonance, current function and voltage functions are in same phase.

Assertion: At resonance, power factor of L-C-R series circuit is 1. Reason: At resonance, X_(C) = X_(L)

Assertion (A) Most mineral must enter the root by the active absorption into the cytoplasm of epidermal cells. Reason (R ) This transportation needs energy in the form of ATP . Some ions also move into the epidermal cells passively.