Examlex
Which of the following elements is a non-metal?
Silicates
Minerals that contain silicon and oxygen, often with one or more metals, forming the majority of the Earth's crust.
Element Si
Silicon, a chemical element with symbol Si, known for its semiconductor properties and abundant use in electronic devices.
Quartz
A hard, crystalline mineral composed of silicon dioxide, notable for its durability and its use in making jewelry and electronic equipment.
Oxides
Compounds composed of oxygen and another element, which can form minerals and play significant roles in geological processes.
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