Tamilnadu BoardEnglish MediumSTD 8ScienceMatter Around Us.4 Marks
Question
Write three properties of metalloids.
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Answer
Properties of metalloids: Metalloids are all solid at room temperature.
They can form alloys with other metals
Some metalloids, such as silicon and germanium, can act as electrical conductors under specific conditions, thusProperties of metalloids: Metalloids are all solid at room temperature.
They can form alloys with other metals
Some metalloids, such as silicon and germanium, can act as electrical conductors under specific conditions, thus they are called semiconductors.
Silicon for example appears lustrous, but is not malleable nor ductile (it is brittle – a characteristic of some non – metals). It is a much poorer conductor of heat and electricity than metals.
they are called semiconductors.
Silicon for example appears lustrous, but is not malleable nor ductile (it is brittle – a characteristic of some non – metals). It is a much poorer conductor of heat and electricity than metals.
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