TS EAMCET · Chemistry · Chemical Bonding and Molecular Structure

Among the following compounds, the one with the highest lactice energy is

A $LiF$
B $NaCl$
C $MgO$
D $LiCl$

Verified Solution

Answer & Solution

Correct Answer

(C) $MgO$

Step-by-step Solution

Detailed explanation

We know, Lattice Energy ∝ ChargeSize Now, for compounds containing ions of same charge, lattice energy is inversely proportional to the size, and thus it increases as the size of ions decreases. In the given compounds, size of Mg2+ and O2- is small and they both…

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

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From TS EAMCET

Match the following

	List-I		List-II
(A)	$Aq .$ Solution of ${AlCl}_{3}$	(I)	Basic
(B)	$Aq .$ solution of ${CH}_{3} COONa$	(II)	Acidic
(C)	$Aq .$ solution of $KCl$	(III)	Highly conductive
(D)	${Al}_{2} O_{3}$	(IV)	Strongly basic
		(V)	Amphoteric

The correct match is

TS EAMCET 2022 Hard

For the reactions, $\begin{aligned} & 2 \mathrm{Cl}(\mathrm{g}) \longrightarrow \mathrm{Cl}_2(\mathrm{~g}) \ & \mathrm{CO}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_2(g) \end{aligned}$ What are the signs of $\Delta S$, respectively?

TS EAMCET 2020 Medium

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