PLZ HELP ASAP THIS IS DUE LIKE RIGHT NOW

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. : )

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

May someone me with these science questions