\(Na_2O_2\) is not the superoxide of sodium. It is peroxide of sodium.
The correct superoxide formula for sodium is \(NaO_2\).
So, the correct option is (D): It is the super oxide of sodium.
Ion having highest hydration enthalpy among the given alkaline earth metal ions is:
A small block of mass \(m\) slides down from the top of a frictionless inclined surface, while the inclined plane is moving towards left with constant acceleration \(a_0\). The angle between the inclined plane and ground is \(\theta\) and its base length is \(L\). Assuming that initially the small block is at the top of the inclined plane, the time it takes to reach the lowest point of the inclined plane is _______. 