using only the periodic table, write the expected ground-state electron configurations for:

Question

a. element number 116
b. an element with three unpaired 5d electrons
c. the halogen with electrons in the 6p atomic orbitals

Answer 1

i still don't understand.
especially part a, because element number 116 is not on the periodic table.

Answer 2

http://www.webelements.com/