1. Compare the arrangement of particles in a solid
substance to their arrangement in a liquid.

Ibelieve your answer is true 

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Idon't know hope someone you

Ithink that’s it’s b