During a chemical reaction the i. total number atoms remains unchanged ii. number of atoms of each type of element remains unchanged iii. total number of chemical bonds remains unchanged 1. i and iii 2. i 3. ii 4. i, ii, and iii 5. i and ii 6. iii

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.