How can scientists use ionization energy to learn more about elements that have not been discovered yet?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa