What trend does first ionization energy follow, going across the periodic table

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

100mg magnesium reacts with 20ml of 1.0m hcl

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.