Metals.
Chloride and bromine are not likely to form an ionic bond because only one of them, chloride, is an ion.If the questioner meant chlorine and bromine, they are not likely to form an ionic bond with each other, because there is too little difference in their electronegativities. However, both of them are very likely to form ionic bonds with less electronegative elements, such as metals.
Ionic bond exist between metals and nonmetals.
The least ionic type of bond is a covalent bond.
with bromine (Br)
Members of groups 1, 2, 6, 7 in the Periodic Table are most likely to form ionic compounds. It depends on what pair of elements are involved, for instance one rule of thumb is metal with nonmetal. Another, more systematic way, to assess this is to consider the difference in electronegativity between the two elements. If the electronegativity difference is 2 or more then the bond will be ionic. If the difference is less than 2 but more than 1.6 and one of the elements is a metal then there can be an ionic bond.
A metal and a nonmetal can form an ionic bond.
Chloride and bromine are not likely to form an ionic bond because only one of them, chloride, is an ion.If the questioner meant chlorine and bromine, they are not likely to form an ionic bond with each other, because there is too little difference in their electronegativities. However, both of them are very likely to form ionic bonds with less electronegative elements, such as metals.
... large difference in electronegativity.
An ionic bond
All of the metallic elements will form an ionic bond with fluorine.
Ionic bond exist between metals and nonmetals.
The least ionic type of bond is a covalent bond.
with bromine (Br)
Members of groups 1, 2, 6, 7 in the Periodic Table are most likely to form ionic compounds. It depends on what pair of elements are involved, for instance one rule of thumb is metal with nonmetal. Another, more systematic way, to assess this is to consider the difference in electronegativity between the two elements. If the electronegativity difference is 2 or more then the bond will be ionic. If the difference is less than 2 but more than 1.6 and one of the elements is a metal then there can be an ionic bond.
An ionic bond
Another nonmetal, such as Hydrogen, could combine with Iodine to form a covalent bond, which is when the two elements share electrons.
The elements that generally form ionic bonds are the metals and nonmetals.