What is the number of radial and angular nodes in a $5f$ orbital?

What is the difference between the terms orbit and orbital?

The ground state energy of a hydrogen atom is $-13.6 \ eV$. Consider an electronic state $\Psi$ of $He^+$ whose energy,azimuthal quantum number,and magnetic quantum number are $-3.4 \ eV$,$2$,and $0$ respectively. Which of the following statement$(s)$ is(are) true for the state $\Psi$?
$(1)$ It has $2$ angular nodes
$(2)$ It has $3$ radial nodes
$(3)$ It is a $4d$ state
$(4)$ The nuclear charge experienced by the electron in this state is less than $2e$,where $e$ is the magnitude of the electronic charge.

The incorrect set of quantum numbers $(n, l, m, s)$ for an electron in $3p$ orbital is

When the $3d$ orbital is complete,the next electron will enter the

For an electron in the $4f$ orbital,which of the following sets of quantum numbers is correct?