the number of valence electrons the charge of the compound the mass of protons in each atom the number of atoms of each element
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The chemical formula for water is H_{2}O. What does the formula show about each element in the compound?
Possibilities:
- the number of valence electrons
- the charge of the compound
- the mass of protons in each atom
- the number of atoms of each element

the number of atoms of each element