An ion is represented by the symbol $_8^{18}$O$^{2-}$.
Which statements about this ion are correct?
1- The ion contains 8 electrons.
2- The ion contains 10 neutrons.
3- The ion contains 8 protons.
1 )
1 and 2
2 )
1 and 3
3 )
2 only
2 and 3
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