Which focuses on the composition of matter
analytical chemistry
physical chemistry
organic chemistry
inorganic chemistry

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

All of the following are part of the biosphere except

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!