[填空题]
The angular momentum 10 in the hydrogen atff6d d3z( c*m9/gia; a fah/llom is given both7v zdp3,66jx g).c5lpz us0ong 7xfll by the Bohr model and by quant,7cz3.ovp6 u p lx d0g)6gxljlsn75 zfum mechanics. Compare the results for $L = mvr$.
or $L_{\text{QM}}$ = $\hbar$. asdfasdofadsf