Question

using the highlighted elements on the periodic table, select th that are nonmetals.
partial periodic table of the elements
a k
b nb
c fe
d c

Explanation:

• K (Potassium): It is an alkali metal, located in Group 1 of the periodic table. Metals are generally good conductors of heat and electricity, and have a shiny luster. Potassium has these metallic properties.
• Nb (Niobium): It is a transition metal. Transition metals have high melting and boiling points, and are often used in alloys. Niobium shows metallic characteristics.
• Fe (Iron): It is a transition metal. Iron is a common metal, known for its strength and ability to conduct electricity and heat.
• C (Carbon): It is a non - metal. Non - metals have properties such as poor conductivity of heat and electricity (graphite is an exception for electricity to some extent), and can exist in different allotropic forms (e.g., diamond, graphite, fullerenes).

Answer:

D. C