MHT CET · Chemistry · Solid State

An element has BCC structure with edge length of unit cell 600 \(\mathrm{pm}\). What is the atomic radius of element?

A \(\sqrt{3} \times 150 \mathrm{pm}\)
B \(150 \mathrm{pm}\)
C \(300 \mathrm{pm}\)
D \(\frac{300}{\sqrt{2}} \mathrm{pm}\)

Verified Solution

Answer & Solution

Correct Answer

(A) \(\sqrt{3} \times 150 \mathrm{pm}\)

Step-by-step Solution

Detailed explanation

For BCC structure.
\(\begin{aligned}
& \sqrt{3} \mathrm{a}=4 \mathrm{r} \\
& \mathrm{r}=\frac{\sqrt{3} \mathrm{a}}{4}=\frac{\sqrt{3} \times 600}{4} \\
& \mathrm{r}=\sqrt{3} \times 150 \mathrm{pm}
\end{aligned}\)

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

Explore more questions on app

From MHT CET

Explore more questions on app