111. Solving a chemistry problem

111. Solving a chemistry problem

The chemical element cobalt is considered.
a) make an electronic formula of the element;
b) determine (underline in the electronic formula) the valence sublevels and graphically represent their electronic structure;
c) determine the number of valence electrons:
d) determine the number of electrons having the value of the orbital quantum number l=1.
e) determine the number of electrons with a combination of quantum numbers n=2 and l=1.

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