Question

question 11 1 pts which of the following groups contains mostly radioactive elements? alkaline earth metals inner transition metals halogens nonmetals question 12 1 pts what type of element is neon? noble gas alkaline earth metal halogen inner transition metal

Explanation:

• For Question 11: Inner - transition metals include the lanthanides and actinides. Many actinide elements are radioactive. Alkaline earth metals, halogens, and non - metals do not mostly consist of radioactive elements.
• For Question 12: Neon is in Group 18 of the periodic table, which is the group of noble gases. It has a full outer electron shell, making it chemically inert.

Answer:

Question 11: inner transition metals
Question 12: noble gas