Angular Momentum of a hydrogen atom in the 7f state

[Noreturn]

Homework Statement

A hydrogen atom is in the 7f state.
What is the magnitude of its orbital angular momentum?

Homework Equations

L=sqrt(L(L+1)hbar

The Attempt at a Solution

L= Sqrt(3(3+1)Hbar)
1.41hbar (we want J*S)

1.41*1.054*10^-34

1.47*10^-34J*S

 

[TSny]

1
2. Homework Equations
L=sqrt(L(L+1)hbar

Note that you have two left parentheses but only one right parenthesis.

3. The Attempt at a Solution

L= Sqrt(3(3+1)Hbar)
1.41hbar (we want J*S)

Did you want the hbar to be inside the square root?
I don't see how you got the 1.41 from the previous line. What number are you taking the square root of?

 

[Noreturn]

No sorry, so the anwser I got was 1.41 hbar.

So I ended up getting sqrt(3(4))hbar

sqrt(12)
or 3.46 h bar

So sorry guess 1.41 was wrong. However even with 3.56 or 3.6*10^-34 J*s was still wrong

 

[TSny]

Your work looks correct, now. But maybe you need to be accurate to three significant figures in your answer. Don't round off until the end.