Question

question 73 (1 point)
listen
cs and ba are ____and _______, respectively.

1. transition metal, diatomic gas
2. alkali metal and alkaline earth metal
3. halogen and noble metal
4. lanthanide and actinide

Explanation:

To solve this, we analyze the periodic table groups:

• Cs (Cesium) is in Group 1, which are alkali metals.
• Ba (Barium) is in Group 2, which are alkaline earth metals.
• Option 1: Cs is not a transition metal, Ba is not a diatomic gas. Eliminate.
• Option 3: Cs is not a halogen, Ba is not a noble metal. Eliminate.
• Option 4: Cs and Ba are not lanthanide/actinide. Eliminate.
• Option 2 matches the group classifications.

Answer:

1. Alkali metal and alkaline earth metal