Question

which of the following is not a semi metal?
(a) silicon (b) sodium (c) tellerium (d) polonium​

Answer 1

Answer:

B sodium

Explanation:

it has valancey = +1

Answer 2

Sodium is not a semi metal.

Explanation:

• Semi metals are also known as metalloids.

• These semi-metals posses intermediate properties of both metals and non metals.

• Metalloids are important semiconductors, often used in computers and other electronic devices.
• They have lower electrical and thermal conductivity than metals.

• Metalloids may either gain or lose electrons during chemical reactions.

• Oxidation numbers of elements in this group range from +3 to -2.
• Boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At) are 8 semi-metals available.

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