CaCl2 is ionic, is solid and will have the highest melting point. The rest are covalent compounds.
CaCl2 which is ionic, the rest are molecular. CaCl2 melts at 7720C
Na2o
CaCl2
NaCl is ionic.
Ionic compounds occur between atoms of a metal and a non-metal therefore: CO2 would not, SrCl2 would, H2S would not and SO2 would not. Only SrCl2 would be an ionic compound.
No,, the consist of only two elements, or two types of atom. But depending can consist of more than two atoms depending on the valences of the elements involved. Examples (covalent): H2O, H2O2, CO2, SF6, Cl2O7, Examples (ionic): Na2O, Na2O2, CaF2, Fe2O3
KBr APEX:)
Ionic bonds are bonds formed by a metal and a nonmetal (e.g. CaCl2), while covalent bonds are bonds formed between two nonmetals (e.g. CO2).
CaCO3+2HCl----->CaCl2+H2O+CO2
CaCO3 + 2HCl -> CaCl2 + CO2 +H2O
The reaction is:Na2CO3--------------Na2O + CO2