Which of the following elements has the largest atomic radius?

Which of the following elements has the largest atomic radius?

Which of the following elements has the largest atomic radius?

Which of the following values does not increase as you move left to right in a period of the periodic table?

Which of the following values does not increase as you move left to right in a period of the periodic table?

Which of the following values does not increase as you move left to right in a period of the periodic table?

Which of the following atoms has the largest atomic radius?

Which of the following atoms has the largest atomic radius?

Which of the following atoms has the largest atomic radius?

Refer to Figure 1 for questions 1-6.

Below are the data for ionization energies of three elements X, Y, and Z. These elements are on the third peroid of the periodic table. The first four ionization energies for elements X, Y, and Z are given below in values of kJ/mol.

Figure 1: Ionization energies in kJ/mol for selected elements.

Which of the unknown elements would you expect to share chemical properties with strontium (Sr)?