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## Main Question or Discussion Point

*"There are 47 electrons surrounding the silver atom nucleus, of which 46 form a closed inner core of total angular momentum zero – there is no orbital angular momentum, and the electrons with opposite spins pair off, so the total angular momentum is zero, and hence there is no magnetic moment due to the core. The one remaining electron also has zero orbital angular momentum"*

Can anyone tell me why the remaining electron has zero orbital angular momentum?

Thanks!