Please help me ill give brainiest to the right answer

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.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted