AP EAMCET · Chemistry · Classification of Elements and Periodicity in Properties

Choose the correct option regarding the following statements:
Statement $- 1 :$ Nitrogen has lesser electron gain enthalpy than oxygen.
Statement $- 2 :$ Oxygen has lesser ionization enthalpy than nitrogen.

A Statement $- 1$ is correct, Statement $- 2$ is wrong
B Both statements $1$ and $2$ are wrong
C Both statements $1$ and $2$ are correct
D Statement $- 1$ is wrong, Statement $- 2$ is correct

Verified Solution

Answer & Solution

Correct Answer

(C) Both statements $1$ and $2$ are correct

Step-by-step Solution

Detailed explanation

We know that the electronic configuration of nitrogen is 1s22s22p3 and that of oxygen is 1s22s22p4. Now, we can observe that nitrogen atom has half filled electronic configuration which corresponds to extra stability so more energy will be required to eject electron from…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match the following.

List - $I$ Reaction		List - $II$ Catalyst
$(A)$	$N_{2} (g) + 3 H_{2} (g) ⟶ 2 {NH}_{3} (g)$	$(I)$	$Ni$
$(B)$	$2 H_{2} (g) + O_{2} (g) ⟶ 2 H_{2} O (l)$	$(II)$	$Pt$
$(C)$	$CO (g) + 3 H_{2} (g) ⟶ {CH}_{4} (g) + H_{2} O (g)$	$(III)$	$ZnO - {Cr}_{2} O_{3}$
$(D)$	$CO (g) + 2 H_{2} (g) ⟶ {CH}_{3} OH (g)$	$(IV)$	$Fe$

The correct answer is:

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Choose the correct option regarding the following statements:Statement-1:Nitrogen has lesser electron gain enthalpy than oxygen.Statement-2: Oxygen has lesser ionization enthalpy than nitrogen.

Step-by-step Solution

Choose the correct option regarding the following statements:
Statement $- 1 :$ Nitrogen has lesser electron gain enthalpy than oxygen.
Statement $- 2 :$ Oxygen has lesser ionization enthalpy than nitrogen.