MCQ
Hess law of heat summation includes
- AInitial reactants only
- ✓Initial reactants and final products
- CFinal products only
- DIntermediates only
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$(1)$ It is Diamagnetic in nature
$(2)$ It is a good oxidising agen
$(3)$ It is colourless compound
Assertion $A$ : The first ionization enthalpy for oxygen is lower than that of nitrogen.
Reason $R$ : The four electrons in $2 p$ orbitals of oxygen experience more electron-electron repulsion.
In the light of the above statements, choose the correct answer from the options given below.