Offer your rationale for dividing chemical elements into three types: metals, non-metals, and noble gases.

Offer your rationale for dividing chemical elements into three types: metals, non-metals, and noble gases. Write down examples of chemical signs for each type of element. Read them.

Chemical elements are divided into metal elements and non-metal elements. Non-metallic elements also include inert chemical elements, but they do not react or react poorly with other substances, therefore they are separated into a separate group.
Write down examples of chemical signs for each type of element. Read them.
Metals: Li – lithium, Na – sodium, K – potassium, Ca – calcium, Al – aluminum, Fe – iron and others.
Non-metals: H – hydrogen, O – oxygen, C – carbon, S – sulfur and others.
Noble gases: Ne – neon, Ar – argon, Kr – krypton, Xe – xeon, Rn – radon.