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प्रश्न
State the type of element for the following:
Silicon
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metalloid
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संबंधित प्रश्न
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
follows. Which symbol is the correct one ?
Explain the terms 'valency' and 'variable valency'.
Fill in the blank:
Symbol represents _____ atom(s) of an element.
State which element exists in the highest percentage in earth’s crust.
Give the symbol of the following element:
Sulphur [sulphide]
Write the radical of the following valency:
Sulphate
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Chloride
What does the symbol '(l)' present in a chemical equation, mean?
Write the constituent elements and their symbols for the following compounds.
- Carbon monoxide
- Washing soda
In the same way in chemistry, each element is denoted by a ______.
