Question

1. what is the most reactive group of nonmetals? (0.5 points) * carbon group oxygen group transition metals nitrogen group boron group lanthanides noble gases alkali metals alkaline earth metals halogens actinides

Explanation:

Halogens (Group 17 in the periodic table) are non - metals. They have 7 valence electrons and need only one more electron to achieve a stable octet. This makes them highly reactive as they readily gain an electron. For example, fluorine (a halogen) is one of the most reactive elements.
Carbon group (Group 14) has 4 valence electrons and their reactivity is moderate. Oxygen group (Group 16) has 6 valence electrons and is reactive but less than halogens. Nitrogen group (Group 15) has 5 valence electrons and is less reactive than halogens. Boron group (Group 13) has some non - metals but they are not as reactive as halogens. Lanthanides and Actinides are metals (f - block elements). Noble gases have a full octet (or duet for helium) and are inert. Alkali metals (Group 1) and Alkaline earth metals (Group 2) are metals. Transition metals have variable reactivity but are metals.

Answer:

Halogens