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sukhopar [10]
3 years ago
5

Which statements are correct about silicon?

Chemistry
1 answer:
ki77a [65]3 years ago
4 0

Answer:

A. Metalloid

E. Has similar properties as Ge

F. Belongs to Period 3​

Explanation:

Silicon is the 14th element on the periodic table. Its unit is SI. Its properties straddles between those of metals and non-metals and it is described as a non-metal.

It's atomic weight or mass number is 28u. It has an atomic number of 14 i.e in its neutral state, the number of protons and electrons are equal to 14.

Silicon belongs to the 4th group and the 3rd period on the periodic table. Elements in the same group share similar chemical properties. The elements in Si group are: C, Ge, Sn and Pb. The properties of Si is similar to these elements because they all have a valency of 4. Across the period, the properties varies this is why Si would have a very different property from Al and P.

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When ice melts, what happens to the water molecules?
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Not much.

Ice is only water, when the molecules are submitted to low temeperatures and have formed a crystalline arrangement of low density. In ice, the molecules arange themselves in hexagons with hydrogen bonds binfing each molecule.

When ice melts it turnes into water and the molecules leave the crystalline shape and come back to their normal density. In water, not all molecules are binded forming short and irregular lines.

→ In the image below, you can see the arrangement of ice and water.


Hope it helped,


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