Question

complete each sentence with the correct term from the study guide.

1. the ______ are located to the left of the stair - step line on the periodic table.
2. different structural forms of the same element are called ______.
3. positively charged ions are surrounded by freely moving electrons in ______.
4. a(n) ______ is a molecule composed of two atoms of the same element.
5. the ______ are in groups 3 through 12 on the periodic table.

Explanation:

• For question 20: Metals are located to the left of the stair - step line on the periodic table.
• For question 21: Allotropes are different structural forms of the same element.
• For question 22: In metallic bonding, positively charged ions are surrounded by freely moving electrons.
• For question 23: A diatomic molecule is a molecule composed of two atoms of the same element.
• For question 24: Transition metals are in groups 3 through 12 on the periodic table.

Answer:

1. metals
2. allotropes
3. metallic bonding
4. diatomic molecule
5. transition metals