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mol H2 = V/Vstp
= 3,36/22,4 = 0,15
mol X = 1/(3/2) . 0,15
= 2/3 .0,15 = 0,1
mol = massa/Ar
Ar = Massa/mol
= 5,2/0,1 = 52 gr/mol
Z = A - N
= 52 - 28 = 24
[Ar] = 4s² 3d⁴
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