Question : ______ solids are formed by the three-dimensional arrangements of cations and anions bound by strong coulombic (electrostatic) forces.

Option 1: Metallic

Option 2: Covalent

Option 3: Ionic

Option 4: Molecular

Question : Atoms having the same number of protons but different numbers of neutrons are called

Option 1: Isotopes

Option 2: Cations

Option 3: Higgs Boson

Option 4: Anions