Question

Which of these elements has the electonic configuration of
1s22s22p63s23p63d104s1

Answer 1

Use the periodic table to guide you.1s2 takes us to He, 2s2 to Be, 2p6 to Ne, 3s2 to Mg, etc. Can you tell where you are on the periodic table with 3p6 using this info?

Answer 2

Cu

Answer 3

If you mean the whole thing, you are correct :-)

Answer 4

Transition metals are a little funky :-)