is this correct or incorrect
nonmetal are elements that tend to gain electrons in chemical reactions.
yes.
This statement is correct. Nonmetals are elements that typically have a tendency to gain electrons in chemical reactions. They often have higher electron affinities and higher electronegativities compared to metals. This property allows them to easily accept or gain electrons to achieve a stable electron configuration.
To verify the accuracy of this statement, you can consult the periodic table. Nonmetals are located on the right-hand side of the periodic table, including elements such as oxygen, nitrogen, fluorine, and chlorine. By referring to their properties and electron behavior, you will find that nonmetals indeed have a tendency to gain electrons during chemical reactions.