The correct option with order of melting points of the pairs \((\mathrm{Mn}, \mathrm{Fe}),(\mathrm{Tc},…

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 :
  1. \(\mathrm{Fe} \lt \mathrm{Mn}, \mathrm{Ru} \lt \mathrm{Tc}\) and \(\mathrm{Re} \lt \mathrm{Os}\)
  2. \(\mathrm{Mn} \lt \mathrm{Fe}, \mathrm{Tc} \lt \mathrm{Ru}\) and \(\mathrm{Os} \lt \mathrm{Re}\)
  3. \(\mathrm{Mn} \lt \mathrm{Fe}, \mathrm{Tc} \lt \mathrm{Ru}\) and \(\mathrm{Re} \lt \mathrm{Os}\)
  4. \(\mathrm{Fe} \lt \mathrm{Mn}, \mathrm{Ru} \lt \mathrm{Tc}\) and \(\mathrm{Os} \lt \mathrm{Re}\)

Solution

Melting point order
$\begin{aligned}
& \mathrm{Fe}>\mathrm{Mn} \\
& \mathrm{Ru}>\mathrm{Tc} \\
& \mathrm{Re}>\mathrm{Os}
\end{aligned}$

Asked in: JEE Main 2025 (29 Jan Shift 1)

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