Write equation between 2-butanone and 2-methylbutanal by using tollen reagent and KMnO⁴​

Which of these best describes an ionic bond?

When balancing a chemical equation:

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!