MCQ
Hydrogen can be put in halogen group because
- AIt has deuterium and tritium as isotopes
- ✓It forms hydrides like chlorides
- CIt contains one electron only
- DIt is light
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$2 A ( g ) \rightarrow A _{2}( g )$
at $298\, K , \Delta U^ \ominus,=-20\, kJ\, mol ^{-1}, \Delta S \odot=-30\, J$$K ^{-1}\, mol ^{-1},$ then the $\Delta G ^{\ominus}$ will be........$J$
