The relative atomic weight of iron is 56. The relative atomic weight of magnesium is 24. 100g. The one in magnesium and 100g iron contains more electrons

The relative atomic weight of iron is 56. The relative atomic weight of magnesium is 24. 100g. The one in magnesium and 100g iron contains more electrons

When 100 GMG is 100 / 24 mol and one mg atom contains 12 electrons, the amount of electron containing substance in 100 GMG is 50 mol;
When 100 g mg is 100 / 56 mol and one Fe atom contains 26 electrons, the amount of electron containing substance in 100 g Fe is 325 / 7 mol, less than 50 mol;
Therefore, there are more electrons in 100 mg

5. Mg iron oxide is reduced by CO at high temperature to obtain ng iron. When the atomic weight of oxygen is 16, the atomic weight of iron is 0
A.2(m-n)/3n B.24n(m-n) C.(m-n)/8n D.n/24(m+n)

B.24n(m-n)
Let the atomic weight of iron be a
n（2a+48）/2a=m
a=24n/（m-n）