Chemistry
Chemistry
Problem
Work out the formulas of the following compounds:Intuitive explanation
The key here is valence — each element has a characteristic number of electrons it wants to gain, lose, or share. To find a compound's formula, balance the total positive and negative charges by finding the smallest whole-number ratio of atoms. Think of it like a puzzle where cations and anions must "cancel out" electrically. Once you identify what charge each element typically carries, the formula writes itself.
Intuitive explanation
The key here is valence — each element has a characteristic number of electrons it wants to gain, lose, or share. To find a compound's formula, balance the total positive and negative charges by finding the smallest whole-number ratio of atoms. Think of it like a puzzle where cations and anions must "cancel out" electrically. Once you identify what charge each element typically carries, the formula writes itself.