Question

which type of elements metals or nonmetals show the properties of brittleness​

Answer 1

Silicon for example appears lustrous, but is not malleable nor ductile (it is brittle - a characteristic of some nonmetals). It is a much poorer conductor of heat and electricity than the metals. The physical properties of metalloids tend to be metallic, but their chemical properties tend to be non-metallic
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Answer 2

Answer:

plastics show the property of brittilenesd