Question

match the following
elements with f - electrons filling up
group 7a
elements that have both properties of metals and nonmetals
group 2a
elements with d - electrons filling up
group 8a
group 1a

1. alkali metals
2. alkaline earth metals
3. halogens
4. noble gases
5. transition metals
6. lanthanides and actinides
7. metalloids

Explanation:

1. Lanthanides and actinides are the elements where f - electrons are filling up.
2. Group 7A elements are halogens.
3. Metalloids have properties of both metals and non - metals.
4. Group 2A elements are alkaline earth metals.
5. Transition metals are the elements with d - electrons filling up.
6. Group 8A elements are noble gases.
7. Group 1A elements are alkali metals.

Answer:

Elements with f - electrons filling up: 6. lanthanides and actinides
Group 7A: 3. halogens
Elements that have both properties of metals and nonmetals: 7. metalloids
Group 2A: 2. alkaline earth metals
Elements with d - electrons filling up: 5. transition metals
Group 8A: 4. noble gases
Group 1A: 1. alkali metals