Which of the following factors contributes to the increase in atomic size within a group in the period table as the atomic number increases

Which statement is true about ionic compounds?

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

The number at the end of an isotope’s name is the number.