A solid element that is malleable' a good conductor of electricity, and reacts with oxygen is classified as a

1) metal

2) metalloid

3) Nobel gas

4) non metal

1) metal

Even though metalloids are also conductors of heat and electricity, malleable they are not as good as metals.

Metals are very good conductors of electricity and heat. They are also very hard to touch. Noble gases and non metals are the exact opposite in physical and chemical properties. Metals readily react with oxygen.