Which of the following statement is not correct w.r.t. quantum numbers?

All orbitals of a given value of ‘n’ constitute a single shell.

Energy of shell will increase with increase in n value because negatively charged electron is to be taken away from the positively charge nucleus by supplying energy.

Every nth shell has ‘n’ subshells, n2 orbitals and 2n2 electrons.

The spin of electron is given by + n or -n.