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1mol镁原子失去2mol电子形成1mol镁离子,判断正误.

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1mol镁原子失去2mol电子形成1mol镁离子,判断正误.
3Q
1mol镁原子失去2mol电子形成1mol镁离子,判断正误.
如果一个Mg原子失去2个电子,那么楼主的说法是正确无误的.
不过根据我所了解的情况,我要来唱反调一下.已经合成了Mg(I)一价离子:[Mg-Mg]2+,这样每个Mg原子只失去一个电子,并在两个Mg+之间形成一个Mg-Mg 共价键.
当然,这对于初高中来说,毋须了解这么透,不过化学确实在发展,一些以前正确的东西会被发现有例外.
这样的化合物还有[Zn-Zn]2+
Stable Magnesium(I) Compounds with Mg-Mg Bonds
Shaun P.Green,1,2 Cameron Jones,1* Andreas Stasch1*
The chemistry of the group 2 metals (beryllium,magnesium,calcium,strontium,and barium) is dominated by the +2 oxidation state.Here,we report the reductions of two magnesium(II) iodide complexes with potassium metal in toluene,leading to thermally stable magnesium(I) compounds,(L)MgMg(L) (where L is [(Ar)NC(NPri2)N(Ar)]– or {[(Ar)NC(Me)]2CH}–,Ar is 2,6-diisopropylphenyl,Me is methyl,and Pri is isopropyl) in moderate yields.The results of x-ray crystallographic and theoretical studies are consistent with central Mg 2+2 units that have single,covalent magnesium-magnesium bonding interactions with 2.8508 ± 0.0012 (standard deviation) and 2.8457 ± 0.0008 angstrom bond lengths,respectively,and predominantly ionic interactions with the anionic ligands (L).