What is reactivity series of metal???​

koi on hai

There are main groups in the modern periodic table of elements

What produces wave a)sound b) heats c)transfer of energy d)vibrations

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!