how many orbitals in n=2

[Kayko Lee 1C]

I was reviewing past textbook problems and a question was: How many orbitals can have the following quantum numbers in an atom for n=2? and I said 5 but the solution is apparently 4. Why would it be 4?

[Stuti Pradhan 2J]

n=2 only has s and p orbitals, since the first quantum number possible for a d orbital is 3. There is 1 s orbital and there are 3 p orbitals, so n=2 has 4 orbitals.

Hope this helps!

[Sahaj Patel Lec3DisK]

If n=2, then l can equal 0 or 1. If l equals 0 that is the s orbital, and if l equals 1 that is the p orbital. Since, as stated before me, there is one s orbital and three p orbitals, the possible answer is 4 orbitals.

[Julianna_flores3E]

Yes, as stated before it has four because it is the s and p orbitals. Remember that the p orbital is p(y) p(x) and p(z) this added to the s orbital equals four.

[CesarLec1]

As those stated above it will have 4 orbitals because when n=2, the l=0,1 (Up to n-1) then ml ranges from -l,+l so it would just be 0 for l=0 and then m=-1,0,1 and added them up equals 4 orbitals.