Calculate the volume in Liters of 15 moles of Neon gas (at STP)

What is the formula for the molecular compound nitrogen monoxide

Drive down any three characteristic of modern periodic table

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!