Question

rank values from highest to lowest ionization energy. to rank items as equivalent, overlap them. cl s pb sn te highest lowest submit previous answers request answer incorrect; try again; 2 attempts remaining incorrect, try again.

Explanation:

Step1: Recall ionization energy trends

Ionization energy increases across a period (left to right) and decreases down a group (top to bottom) in the periodic table. Exceptions are minor here.

Step2: Locate elements in periodic table

• Cl (Chlorine): Period 3, Group 17
• S (Sulfur): Period 3, Group 16
• Te (Tellurium): Period 5, Group 16
• Sn (Tin): Period 5, Group 14
• Pb (Lead): Period 6, Group 14

Step3: Rank by trends

Across Period 3: Cl > S. Down Group 16: S > Te. Down Group 14: Sn > Pb. Between Period 5 groups: Te > Sn.

Answer:

Highest to lowest:

1. Cl
2. S
3. Te
4. Sn
5. Pb