Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
EasyWhich of the following set of properties generally decreases along a period?
- AIonization energy and atomic radii
- BMetallic character and atomic radii
- CElectron affinity and electronegativity
- DValency and oxidation potential
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Match the following elements,given as hints to their first,second ionization enthalpies and electron gain enthalpies.
List-$I$ List-$II$ $i)$ Most reactive non-metal $A$. $\Delta H_1=419, \Delta H_2=3051, \Delta_{Eg} H=-48$ $ii)$ Most reactive metal $B$. $\Delta H_1=1681, \Delta H_2=3374, \Delta_{Eg} H=-328$ $iii)$ Least reactive element $C$. $\Delta H_1=738, \Delta H_2=1451, \Delta_{Eg} H=-40$ $iv)$ Metal forming binary halide $D$. $\Delta H_1=3272, \Delta H_2=5251, \Delta_{Eg} H=+48$
| List-$I$ | List-$II$ |
| $i)$ Most reactive non-metal | $A$. $\Delta H_1=419, \Delta H_2=3051, \Delta_{Eg} H=-48$ |
| $ii)$ Most reactive metal | $B$. $\Delta H_1=1681, \Delta H_2=3374, \Delta_{Eg} H=-328$ |
| $iii)$ Least reactive element | $C$. $\Delta H_1=738, \Delta H_2=1451, \Delta_{Eg} H=-40$ |
| $iv)$ Metal forming binary halide | $D$. $\Delta H_1=3272, \Delta H_2=5251, \Delta_{Eg} H=+48$ |
Maximum enthalpy change is associated with which of the following reactions?
Consider the following elements $In$,$Tl$,$Al$,$Pb$,$Sn$ and $Ge$. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies,respectively,are
DifficultJEE MAIN 2025
View SolutionThe element with a very high ionization enthalpy but zero electron gain enthalpy is ....
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View SolutionFluorine,chlorine,bromine and iodine are placed in the same group $(17)$ of the periodic table,because
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