PART 2 : THE QUEST CONTINUES... By the end of this activity, students should be able to
● Demonstrate their understanding of the periodic table and trends to place fictional elements based on their
properties.
Directions

Use your knowledge of the periodic table and trends to add fictional elements to a periodic table based on their
properties. Once the elements are in the correct place they will reveal a hidden message. Once you have placed all
of the elements into the table correctly, write out the symbols in the order of “increasing atomic mass” and read the
hidden message.

1. Um is in the 3rd period and has three electrons in its highest p-orbitals.
2. St is a gas that does not belong to a specific family.
3. Ea, Nd and Dy are all alkali metals.
4. F, En, and K are alkaline earth metals.
5. A and Rb are halogens.
6. Ma, U and R are all elements that have a full octet.
7. Me and Ex both form -2 ions.
8. The ionization energy trend for the elements that form +1 ions is Ea < Nd < Dy.
9. The electronegativity value for En is greater than K, but it is less than F.
10. A has a smaller atomic radius than Rb.
11. R is the noble gas with the largest atomic radius.
12. Me has a smaller value for ionization energy than Ex.
13. Th, Or and E are all located in the second period.
14. Ma has one less proton than Nd.

Periodic Classification of Elements / Class X / Learning pathways by Greeshma Columbus

15. Jo would form a +3 cation and is a metal.
16. The electronegativity values of Th is less than E but greater than Or.
17. Ys can only form a +4 ion.