I’m timed! (I’ll mark u brainlest if ur answer is right :p)
Hurry

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. : )

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains