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The electron in a certain hydrogen atom has an angular momentum of 6.834 × 10-34 J·s. What is the largest possible magnitude for the z component of the angular momentum of this electron? For accuracy, use h = 6.626 × 10-34 J·s.

I know you need to use the equations Lz=ml* h/2*pi
then use L=sqrt of l(l+1) times h/2pi
not sure where to go from here

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