64 Задачка по химии №06 435

25. a) Which orbitals of atoms are filled earlier:
4s or 3d; 5s or 4p? Why?
b) what covalent bond is called σ-bond and what π-bond? Take the nitrogen molecule as an example.

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.