How do I draw a lithium atom. How many rings are there. How many electrons on every ring specify! thanks?

Answer 1

there are 2 rings around it. the innermost one has 2 electrons, and the outermost has 1 electron

Answer 2

very simple, take a period table !
you see, the electronic configuration of Li is 1s2 2s1 or in a simpler way [He]2s1 because [He] configuration is 1s2

so draw a point in the middle than draw s shell (just a ring) with 2 electrons, then draw a bigger circle (the 2s shell) and draw 1 electron !

standard sequence of shell for the hydrogenoid atom is 2,2,6,2,6,10,2,6,10,14,2,6,10,14,and so on...
have fun !