The correct option with order of melting points of the pairs (Mn, Fe), (Tc, Ru) and (Re, Os) is:
Show Hint
- Fe < Mn, Ru < Tc and Re < Os
- Mn < Fe, Tc < Ru and Os < Re
- Mn < Fe, Tc < Ru and Re < Os
- Fe < Mn, Ru < Tc and Os < Re
The Correct Option is C
Solution and Explanation
The question involves determining the order of melting points for pairs of elements (Mn, Fe), (Tc, Ru), and (Re, Os). We have four options to consider. Let's analyze each pair:
- Mn (Manganese) and Fe (Iron):
Manganese has a lower melting point compared to Iron. Therefore, Mn < Fe. - Tc (Technetium) and Ru (Ruthenium):
Technetium, being in the same column group earlier than Ruthenium, has a lower melting point. Thus, Tc < Ru. - Re (Rhenium) and Os (Osmium):
Rhenium has a lower melting point compared to Osmium, so Re < Os.
Based on the analysis, the correct order of the melting points is Mn < Fe, Tc < Ru and Re < Os.
This corresponds to the correct option given: Mn < Fe, Tc < Ru and Re < Os
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