Which of the following clusters of orbitals could form a shape similar to that shown here (figure 3) in the valence shell of an isolated atom or one about to enter into bonding with other atoms?
a) five sp³d
b) three sp² and one p orbital

Nonpoint source pollution is difficult to control because it

What was bohr’s contribution to the planetary model

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!