Chapter Review: Chapter 19

When do atoms combine to form a compound?

What shows the elements a compound contains and the exact number of the atoms of each element in a unit of that compound?

What is the total number of atoms in the compound Ca(ClO₃)₂?

What are dot diagrams used to represent?

Which of the following elements has the simplest electron dot diagram?

What will the A atom do to become more stable?

What will the B atom do to become more stable?

The chemical formula for table salt is NaCl. Which element has more atoms in the formula? Which element has a larger share of the mass in the formula?

Covalent bonds are generally formed between what sort of elements?

A lithium atom has three protons and three electrons. A fluoride atom has nine protons and nine electrons, with seven electrons in its outer energy level. Using a dot diagram of the two atoms, what type of bond forms between the lithium atom and the fluoride atom and why?