Elements in Group 2 are known as what?

Elements in Group 2 are known as what?

• A. Halogens
• B. Noble Gases
• C. Transition Elements
• D. Alkaline Earth Metals

Answer: (D)

Group 2 elements are called alkaline earth metals. They sit in the second column of the periodic table and include elements like beryllium, magnesium, calcium, strontium, barium, and radium. Each of these elements has two electrons in its outer shell, which leads to a common +2 oxidation state when they form compounds. Their oxides and hydroxides are strongly basic, so when they react with water they produce alkaline solutions. That combination of two valence electrons and the generation of alkaline products in compounds is why this group earned the name alkaline earth metals. The other options don’t fit because halogens are in Group 17 and are nonmetals that tend to form -1 ions; noble gases are in Group 18 and are largely unreactive; transition elements are the d-block metals in Groups 3–12 with more variable chemistry.

Group 2 elements are called alkaline earth metals. They sit in the second column of the periodic table and include elements like beryllium, magnesium, calcium, strontium, barium, and radium. Each of these elements has two electrons in its outer shell, which leads to a common +2 oxidation state when they form compounds. Their oxides and hydroxides are strongly basic, so when they react with water they produce alkaline solutions. That combination of two valence electrons and the generation of alkaline products in compounds is why this group earned the name alkaline earth metals.

The other options don’t fit because halogens are in Group 17 and are nonmetals that tend to form -1 ions; noble gases are in Group 18 and are largely unreactive; transition elements are the d-block metals in Groups 3–12 with more variable chemistry.