Write the ground-state electron configuration for calcium, ca.

Summarize possible ways in which phases of matter could combine to form a solution.

What is the molar mass of ca(cio4)2

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!