27. Решение задачки по химии №1225

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

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