MCQ
The element having general electronic configuration $3{d^4}4{s^1}$ is
- ANoble gas
- BNon-metal
- CMetalloid
- ✓Transition metal
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$N _{2} O _{4}( g ) \rightleftharpoons 2 NO _{2}( g ) ; \Delta H ^{0}=+58 kJ$
For each of the following cases $(a, b),$ the direction in which the equilibrium shifts is:
$(a)$ Temperature is decreased
$(b)$ Pressure is increased by adding $N _{2}$ at constant $T$

