Erros detected In the Signma formula Sigma must be including time =0 until time =999 equals 1000 Helium 4 doesn't have 4 electrons. It has 2 electrons only. But the conclusion doesn't matter. When speaking of the H atom, it is asumed 1 electron is included. Protium therefore by definition has 1 electron. Protium Ion ( H+ ) however is just a Proton. H+ with 0 neutron = Protium Ion H+ with 1 neutron = Deutrium Ion H+ with 2 neutron = Tritium Ion FAQ Why doesn't documents change after this severe errors?> -- It is a learning process with errors and learning. Human errors is natural. Humans are not a machine.