Which of the following statements is not true?

Question

1) All p orbitals have a node
2) In an atom, all orbitals with m1=0 have the same energy
3) There are 5 orbitals in the 4d subshell
4) 2s orbital shields 2p orbital
5) All of the above statements are true.

I'm pretty sure that 1, 3, and 4 are true but I have no idea whether 2 is true or not.

Answer 1

2 is also true.

Answer 2

if you know that 1,3,4 are true, you can be sure that 5 is true, thus 2 is true