Assertion (A) First ionisation enthalpy of oxygen is less than that of nitrogen.
Reason (R) Atoms with half-filled or completely filled orbitals are less stable.
The correct option among the following is
In which of the following, molecules are arranged in the increasing order of their bond angles?
Arrange the molecules $\mathrm{B}_2, \mathrm{He}_2, \mathrm{~N}_2$ and $\mathrm{C}_2$ in the increasing order of their bond order values.
Two containers $A$ and $B$ contain $\mathrm{CO}_2$ gas. Pressure, volume and absolute temperature of the gas in $A$ are 4 times more compared to that in $B$. The mass of the gas in $B$ is $x \mathrm{~g}$, then the mass of the gas in $A$ will be
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