Question

1. this family contains 3 nonmetals, one metalloid, and one metal. (0.5 points) * noble gases halogens lanthanides carbon group actinides alkali metals transition metals boron group nitrogen group oxygen group alkaline earth metals

Explanation:

• Noble gases: All are non - metals.
• Halogens: All are non - metals.
• Lanthanides: All are metals.
• Carbon group (Group 14): Carbon (C) and silicon (Si) are non - metals (Si is sometimes considered a metalloid in some contexts, but generally, it has non - metallic properties), germanium (Ge) is a metalloid, tin (Sn) and lead (Pb) are metals. But the count of non - metals (2, if we consider Si as non - metal) does not match.
• Actinides: All are metals.
• Alkali metals: All are metals.
• Transition metals: All are metals.
• Boron group (Group 13): Boron (B) is a metalloid, and the rest (Al, Ga, In, Tl) are metals. The non - metal count is 0.
• Nitrogen group (Group 15): Nitrogen (N) and phosphorus (P) are non - metals, arsenic (As) is a metalloid, antimony (Sb) and bismuth (Bi) are metals. This matches the description of 3 non - metals (N, P, and if we consider some allotropes or properties in a broader sense, maybe in some interpretations), 1 metalloid (As), and 1 metal (Bi, Sb can also have some metallic properties but Bi is more metallic).
• Oxygen group (Group 16): Oxygen (O) and sulfur (S) are non - metals, selenium (Se) is a non - metal (or sometimes considered a metalloid in some old - fashioned categorizations, but generally non - metal), tellurium (Te) is a metalloid, polonium (Po) is a metal. The non - metal count is more than 3.
• Alkaline earth metals: All are metals.

Answer:

Nitrogen group