Do what i don’t see nothing
Fe+O2=Fe2O3
The ionic charges switch (oxygen has a -2)
Hope this helps!
Group 7, the halogens.
The elements in this group form -1 ions; examples are chlorine and bromine.
A physical property is an aspect of matter that can be observed or measured without changing it. A chemical property may only be observed by changing the chemical identity of a substance.