[填空题]
The angular momentum 10 i n-hbot-7y+i 2n,t, c1 phoqaln the hydrogen atom is given e93clrrq* e2z1 4g (svts,ieaboth by the Bohr model and by quantum mee ec2v a,*9rzg4t3r iesq1(lschanics. Compare the results for $L = mvr$.
or $L_{\text{QM}}$ = $\hbar$. asdfasdofadsf