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Compounds composed of the atoms of nonmetals are not likely to have ionic bonds.
nonmetals
Covalent bonds usually form between two nonmetals/
Water is a covalent compound, so ionic compounds are more likely to dissolve in water.
2 nonmetals
These are the nonmetals.
covalent compound
It's ionic if it is bonded with hydrogen or other metals, and it's covalent if with other nonmetals, but since bromine is a halogen, it is most likely to form ionic compounds.
Chlorine, Oxygen, and Sulfer. (nonmetals)
CH4, covalent.
Molecule. A nonmetal to nonmetal covalent bond. Electronegativity is not variant enough among the nonmetals to form ionic bonds.