The maximum number of electrons present in an orbital with $$n = 4, l = 3$$ is

Which quantum number provides information about the shape of an orbital?

If $$\Delta x$$ is the uncertainty in position and $$\Delta v$$ is the uncertainty in velocity of a particle are equal, the correct expression for uncertainty in momentum for the same particle is

The number of radial nodes and angular nodes of a $$4 f$$-orbital are respectively