I believe You replace the ending of the elements name with -ide. example: magnesium flourine should should be magnesium flouride.
The answer is c electrostatic repulsion between nuclei
There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
