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Modern Periodic Table

Which of the ...

Question

Which of the following is not a metalloid and why ?
1. germanium
2. tellurium
3. Arsenic

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Solution

All three are metalloids as their properties are intermediate between those of metals and non-metals.
Eg.- Boron(B), Silicon(Si), Germanium(Ge), Arsenic (As), Antimony(Sb), Tellurium(Te) and Polonium(Po).

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