JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
The correct option with order of melting points of the pairs \((\mathrm{Mn}, \mathrm{Fe}),(\mathrm{Tc}, \mathrm{Ru})\) and \((\mathrm{Re}, \mathrm{Os})\) is which?
- A \(\mathrm{Fe} \lt \mathrm{Mn}, \mathrm{Ru} \lt \mathrm{Tc}\) and \(\mathrm{Re} \lt \mathrm{Os}\)
- B \(\mathrm{Mn} \lt \mathrm{Fe}, \mathrm{Tc} \lt \mathrm{Ru}\) and \(\mathrm{Os} \lt \mathrm{Re}\)
- C \(\mathrm{Mn} \lt \mathrm{Fe}, \mathrm{Tc} \lt \mathrm{Ru}\) and \(\mathrm{Re} \lt \mathrm{Os}\)
- D \(\mathrm{Fe} \lt \mathrm{Mn}, \mathrm{Ru} \lt \mathrm{Tc}\) and \(\mathrm{Os} \lt \mathrm{Re}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{Mn} \lt \mathrm{Fe}, \mathrm{Tc} \lt \mathrm{Ru}\) and \(\mathrm{Os} \lt \mathrm{Re}\)
Step-by-step Solution
Detailed explanation
Melting point order \(\begin{aligned} & \mathrm{Fe}>\mathrm{Mn} \\ & \mathrm{Ru}>\mathrm{Tc} \\ & \mathrm{Re}>\mathrm{Os} \end{aligned}\)
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