There are many possible combinations of these ions that will produce ionic compounds with a 1:1 ratio of cations and anions. Some examples include NaCl (sodium chloride), KBr (potassium bromide), and CaF2 (calcium fluoride).
A 1:1 ratio of cations to anions is called a balanced ratio. This occurs when there are equal numbers of positively and negatively charged particles in a solution. A balanced ratio is necessary for many chemical reactions to occur. When the ratio is not balanced, the reaction may not occur at all, or it may occur very slowly.+1,+2 valency of cations can combine with -1,-2 valency of anions to give 1:1 ratio of the ionic compounds.
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