Which of the following best describes an ionic compound? * a positively charged compound composed of cations and atoms
a negatively charged compound composed of anions and atoms
a neutral compound composed of protons and electrons
a neutral compound composed of cations

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

What happens to isotopes that are unstable?

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.