Which is the electron configuration for lithium?
O 1s2
O 2s3
O 1s?2s!
O 1s'2s?

Define dew point. i am writing this part to be able to ask the question

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it