Assigning electron configuration to an element’s atoms is a critical skill in the chemistry classroom. The process is greatly simplified once students are able to use the periodic table as their guide. With increased practice, they are able to quickly master this concept.
“I have…who has” is a short, round-robin game played in the classroom. It is designed to be a brief review or bell-ringer activity, and allows each student in the classroom an opportunity to participate and practice. Because electron configurations can be lengthy, only the very last portion of the configuration is used in this game. For example, titanium, whose configuration is 1s22s22p63s23p64s23d2 would simply be 3d2.
The rules for this activity are simple. Each student is given a card. A designated “starter” student begins by reading the bottom of his/her card (i.e. “Who has 4s1?”). The student with “potassium” printed at the top of his/her card then says, “I have potassium, who has 3p3?” (electron configuration at the bottom of the card). The student who has phosphorus on the top of his/her card continues on in this manner, saying “I have phosphorus, who has…”.
Each card will be used only once, and if there are more cards than students, some students may need to be given more than one card. Any student can start the round, and the starting student will be the last student to answer as well.
This activity includes a set of printable "I have…who has" cards and a colorful periodic table which serves as a resource for the student.