In this activity, students will use their knowledge of the periodic table and periodic 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. This review activity will help students prepare for a summative assessment such as a unit test or final exam.

• Um is in the 3^rd period and has three electrons in its highest p-orbitals.
• St is a gas that does not belong to a specific family.
• Ea, Nd and Dy are all alkali metals. 
• F, En, and K are alkaline earth metals. 
• A and Rb are halogens. 
• Ma, U and R are all elements that have a full octet. 
• Me and Ex both form -2 ions. 
• The ionization energy trend for the elements that form +1 ions is Ea < Nd < Dy.
• The electronegativity value for En is greater than K, but it is less than F.
• A has a smaller atomic radius than Rb.
• R is the noble gas with the largest atomic radius.
• Me has a smaller value for ionization energy than Ex.
• Th, Or and E are all located in the second period. 
• Ma has one less proton than Nd.
• Jo would form a +3 cation and is a metal.
• The electronegativity values of Th is less than E but greater than Or.
• Ys can only form a +4 ion.



Write the hidden message in the space below.