Write the electronic configuration of atoms using the electronic formulas for elements with serial numbers 12, 25, 31, 34, 45.
The electronic configuration of an atom is a numerical representation of its electronic orbitals.
Magnesium: 12 Mg 1s 22s 22p 63s 2;
Manganese: 25 Mn 1s 22s 22p 63s 23p 64s 23d 5;
Gallium: 31 Ga 1s 22s 22p 63s 23p 64s 23d 104p 1;
Selenium: 34 Se 1s 22s 22p 63s 23p 64s 23d 104p 4;
Rhodium: 45 Rh 1s 22s 22p 63s 23p 64s 23d 104p 65s 14d 8.
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