Well ionic compounds are brittle because similar charges repel, which causes them to break usually occurring when a force is applied, like a hammer strike.
B , your products are on the right side of the reaction. The reactants are on the left side
Neon is an element because it is a pure atom
Answer:
your question is incomplete and its

particles which is one mole of a substance
Explanation:
you can solve the question by using this formular 1 mole of a substance=mass of the substance/ its molar mass
you find molar mass of a compound by adding individual molar masses of elements in that compound
I think it’s oxygen and carbon