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elektron terakhirnya adalah : 3d⁶
konfigurasinya : 18[Ar] 4s² 3d⁶
jumlah elektronya = jumlah protonnya = 18+2+6 = 26
L + H2SO4 --> LSO4 + H2
mol L = mol H2SO4 = 0,1 mol
Ar L = 5,6g/0,1mol = 56
Ar = n + p
56 = n + 26
n = 30
jumlah neutron = 30
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