An element you have a +2 charge It is had lost electrons. It would have to lose the same number of electrons that its positive charge is. So it would have lost 2 electrons.
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Alpha Particles
Fe 2+ is Ferrous Fe 3+ is Ferric
6
Alpha radiation, which is the same as helium-4 nuclei.
2+2+2+2+2+2+2+2+2+2+2+2+(2x0) =2+2+2+2+2+2+2+2+2+2+2+2+0 =24