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  • The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong (a) Metal (b) Metalloid (c) Non-metal (d) Left-hand side element

The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

(a) Metal
(b) Metalloid
(c) Non-metal
(d) Left-hand side element

Answers (1)

Ans (b)
Sol
Element with atomic number 14 – Silicon (Si)
It is hard and brittle.
Silicon forms acidic oxides such as silicon dioxide which is weakly acidic.
Non-metals need to gain electrons to become stable. When non-metals react with halogens, they can share electrons and form covalent bonds.
Si has a tendency to react with halogens and form covalent bonds.
Hence, it is a metalloid (shows characteristics of both metals and non metals)

Hence option (b) is correct.

 

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