How does the number of valence electrons in atoms of metalloids explain why metalloids are semiconductors?

they have one or two valence electrons, so they cannot lose electrons easily.
they have one or two valence electrons, so they can lose or gain electrons.
they have three to six valence electrons, so they cannot lose electrons easily.
they have three to six valence electrons, so they can lose or gain electrons.

The right answer is D.

Metalloids are semi-metallic chemical elements, whose physical and chemical properties are intermediate between those of metals and non-metals. Most metalloids are semiconductors (unlike metals that are conductors).

Metalloids are gathered in one and the same zone of the periodic table of elements:

boron (B) (3 unpaired electrons)

silicon (Si) (4 unpaired electrons)

germanium (Ge) (4 unpaired electrons)

arsenic (As) (3 unpaired electrons)

antimony (Sb)

tellurium (Te)

polonium (Po)

The answer is D

Explanation:

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