1. what is the atmospheric layer responsible for long-distance radio communication?

question 1 options:

troposphere

stratosphere

exosphere

thermosphere

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. : )

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !