Литий - 3p, 4n, 3e, +3, 7
Магний - 12p, 12n, 12e, +12, 24
Аргон - 18p, 22n, 18e, +18, 40
Калий - 19p, 20n, 19e, +19, 39
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Литий - 3p, 4n, 3e, +3, 7
Магний - 12p, 12n, 12e, +12, 24
Аргон - 18p, 22n, 18e, +18, 40
Калий - 19p, 20n, 19e, +19, 39