abelxoconda
15.02.2021 •
Chemistry
Determina el numero de mol de 592.8 gr de FeSO4 Determine the number of mol of 592.8 gr of FeSO4
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Ответ:
To find an element with a smaller atomic mass in the same group, one has to look directly up in the same group.
Option a
Explanation:
In the "modern periodic table", when you move down in the same group, the atomic number of the atom increases. The definition of relative atomic masses states that it is the weighted average of the isotopic masses, where the number of protons and the number of neutrons sums up to give the isotopic mass.
While going down the group, we are adding up the protons. And, hence increasing the "number of protons" eventually increases the "atomic mass of an atom". Therefore, to find the light-weighted element in the same group, one should look directly up.