95. Решение задачки по химии №009 519

6. How to explain the variable valence of the atoms of sulfur, chlorine and the absence of a variable valence of the atoms of oxygen and fluorine. Write the electronic formulas of atoms No. 79 (Au), No. 35 (Br) and their ions Аu3, Br–.

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