If an atom has 17 protons, 18 neutrons, and 17 electrons, what is the mass of this atom?
a: 17
b: 18
c: 35
d: 52

If a || b and e || f, what is the value of y ?

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

What are the first three quantum numbers for the electrons located in subshell 2s?