Question

1. this family contains 2 nonmetals, 2 metalloids, and one metal. (0.5 points) *

nitrogen group
alkaline earth metals
noble gases
actinides
carbon group
alkali metals
oxygen group
transition metals
boron group
lanthanides
halogens

Explanation:

Let's analyze each option:

• Nitrogen group: Non - metals (N, P), metalloids (As), metal (Sb, Bi). So, 2 non - metals, 1 metalloid, 2 metals.
• Alkaline earth metals: All are metals (Be, Mg, Ca, Sr, Ba, Ra).
• Noble gases: All are non - metals (He, Ne, Ar, Kr, Xe, Rn).
• Actinides: All are metals (Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr).
• Carbon group: Non - metals (C), metalloids (Si, Ge), metals (Sn, Pb). So, 1 non - metal, 2 metalloids, 2 metals.
• Alkali metals: All are metals (Li, Na, K, Rb, Cs, Fr).
• Oxygen group: Non - metals (O, S), metalloids (Se), metals (Te, Po). So, 2 non - metals, 1 metalloid, 2 metals.
• Transition metals: All are metals.
• Boron group: Non - metal (B), metals (Al, Ga, In, Tl). So, 1 non - metal, 4 metals.
• Lanthanides: All are metals.
• Halogens: Non - metals (F, Cl, Br, I), metalloid (At). So, 4 non - metals, 1 metalloid.

Answer:

Nitrogen group