MCQ
For the reaction ${H_2}_{(g)} + {I_2}_{(g)}$ $\rightleftharpoons$ $2HI_{(g)}$, the equilibrium constant changes with
- ATotal pressure
- BCatalyst
- CThe amounts of ${H_2}$ and ${I_2}$ taken
- ✓Temperature
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$(i) $ in filling a group of orbitals of equal energy, it is energetically preferable to assign electrons to empty orbitals rather than pair them into a particular orbital.
$(ii)$ When two electrons are placed in two different orbitals, energy is lower if the spins are parallel.are valid for

