Na2o how many atoms of each element are in this compound? a. 2 sodium atoms and 1 oxygen atom b. 2 sodium atoms and 2 oxygen atoms c.1 sodium atoms and 1 oxygen atoms d.1 sodium atom and 2 oxygen atoms

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Write the overall equation for the reaction for lithium battery