Electron+Configuration+2

Name Date: STEM Middle Academy – 8th Grade Science – Mr. Condon Block **Electron Configuration Practice II** Example: Nickel __1s22s22p63s23p64s23d8__ notice how [Ar] has replaced the need for writing __1s22s22p63s23p6__ Try to write short-hand electron configurations for the following:
 * 1) Electron configuration tells us most about how an element will behave in nature. List out the electrons for the following elements.
 * 1) Boron
 * 2) Oxygen
 * 3) Argon
 * 4) Chlorine
 * 5) Iron
 * 6) Copper
 * 7) Gold
 * 8) Tin
 * 9) The rule for determining d-shell energy levels is to subtract  from the row number.
 * 10) What is the rule for determining f-shell energy levels?
 * 11) Writing out these long electron configurations can be shortened by using the Noble Gases. These gases all have their outermost  electron shells full and therefore become inert or unreactive.
 * 12) Here is an example of the short-hand electron configuration for nickel (see long-hand form in question #1) [Ar] 4s23d8
 * 1) Boron
 * 2) Oxygen
 * 3) Argon
 * 4) Chlorine
 * 5) Iron