Using only a periodic table as a guide, how do you write the condensed electron configurations for the following atoms?

  1. Rh
  2. Si
    3.Hg
  3. Hf?

1 Answer
Sep 2, 2016

Here's what I get.

Explanation:

1. "Rh" = "[Kr]" 5s 4d^8
Note: This is an exception to what you would predict from th Periodic Table.

2. "Si" = "[Ne]" 3s^2 3p^2

3. "Hg" = "[Xe]" 6s^2 4f^(14) 5d^(10)

4. "Hf" = " [Xe]" 6s^2 4f^(14) 5d^2