A solution <span>has a uniform composition and is only able to be separated by chemical means.</span>
FBI Fedral Burea of Investagation
My answer:
13 group of the periodic table represented by boron, aluminum and gallium subgroup. It includes gallium, indium, thallium. Typical steper oxidation in the subset gallium 3 is explained by the presence of (n-1)d^10 E-configuration.
Aluminium oxidation degree has +3 an electronic configuration of noble gases S^2P^6
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The SI unit for measuring distance is the
meter.
I attached a table of SI measurements for you :)
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