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Bihar Police Constable Model Paper 7
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© examsnet.com
Question : 22
Total: 100
Which is the first metalloid in the periodic table?
Arsenic
Polonium
Boron
Germanium
Validate
Solution:
Boron is the first metalloid in the periodic table followed by silicon, germanium, arsenic, antimony, tellurium, polonium, and astatine.
The elements of the periodic table which display properties of both metals as well as non-metals are called metalloids.
They are the smallest class of elements.
Most metalloids can conduct electricity, but not as well as metals.
Metalloids also tend to be shiny like metals, but brittle like nonmetals.
Chemically, metalloids may behave like metals or nonmetals, depending on their number of valence electrons.
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