Input interpretation
oxygen | atom count
Result
Determine the number of atoms in: oxygen (O_2) Plan: • Use the summation: N_atoms = sum_i N_i. • Determine the values of N_i. • Compute the number of atoms. Use the chemical formula, O_2, to count the number of atoms, N_i, for each element: | N_i O | 2 The number of atoms, N_atoms is: Answer: | | N_atoms = 2
Particle counts
atom count | 2 proton count | 16 p (protons) electron count | 16 e (electrons) net ionic charge | 0