Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are:
Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are:
Option 1 - <p>Na and Ca</p>
Option 2 - <p>Na and Rb</p>
Option 3 - <p>Cs and Ba</p>
Option 4 - <p>Li and Mg</p>
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Correct Option - 4
Detailed Solution:
Li and Mg form nitrides and have bicarbonates that are unstable
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Li+ has the highest hydration enthalpy.
Hence it is most hydrated
Therefore, Correct order of hydrated radii is Cs+ < Rb+ < K+ < Na+ < Li+
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Chemistry Ncert Solutions Class 11th 2023
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