Home » Chemistry » What is the electronic configuration of an element represented as 199X?

What is the electronic configuration of an element represented as 199X?

What is the electronic configuration of an element represented as 199X?
  • A.
    1s 22s2 2p 5
  • B.
    1s22s23s23p3
  • C.
    1s2 2s2 2p 33s2
  • D.
    1s 22s22p 63s23p64s 1
Correct Answer: Option A
Explanation