Halons are a class of element, not a type of charge. As for why the halogens have the most stable charges, they don't - at least not all of them.
The alkali metals Lithium, Sodium, Potassium, Rubidium cesium and Francium is the most reactive group of metals. They are this way because they only need to lose one electron to gain a stable octet which is very favorable energetically. The most reactive group of non-metals is the halogens, Fluorine, Chlorine, Bromine, Iodine and Astatine. These are the exact opposite. They are extremely reactive because they only need to gain one electron to gain a stable octet which is again, highly energetically favorable.
-1 charge.because they have seven valence electrons, halogens tend to share one electron or gain one electron to attain a stable, noble -gas electron configuration. they tend to form ions with a 1- charge
+1
+2
the alkali and alkaline earth metals
I think what you are asking is about is which group on the periodic table has elements with an oxidation number of -1 in most ionic compounds. That is the 17th group - the halogens.
Alkali metals , alkaline earth metals and halogens are most important ionic compound former .
No, halogens are very reactive elements.
The alkali metals Lithium, Sodium, Potassium, Rubidium cesium and Francium is the most reactive group of metals. They are this way because they only need to lose one electron to gain a stable octet which is very favorable energetically. The most reactive group of non-metals is the halogens, Fluorine, Chlorine, Bromine, Iodine and Astatine. These are the exact opposite. They are extremely reactive because they only need to gain one electron to gain a stable octet which is again, highly energetically favorable.
-1 charge.because they have seven valence electrons, halogens tend to share one electron or gain one electron to attain a stable, noble -gas electron configuration. they tend to form ions with a 1- charge
+2
+1
It is true that halogens are most reactive non-metals. This is because of two reasons:-They have only seven electron in their outermost shell. Thus, they get stable configuration only on gaining one electron.Also, halogens are the most electronegative elements and have very attracting power for electrons.
Noble gases are most stable due to the presence of octet of electrons
the alkali and alkaline earth metals
i dunno my dumb teacher wants me to find out she should ask a dam scientist!
Cobalt is difficult to predict the most probable ionic charge due to the fact that it has various oxidation states.