Which molecule combination could hydrogen bond? H₂ and F₂
PH₃ and NO₂
NH₃ and HCl
NH₃ and H₂O

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

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!