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प्रश्न
State the type of element for the following:
Aluminium
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metal
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संबंधित प्रश्न
The symbol of a metal element which is used in making thermometers is :
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Helium by ‘He’
Give the names and symbols of the first twenty elements of the periodic table.
State what is meant by the term ‘activity series of metals’.
Write the radical of the following valency:
Sulphate
Write the radical of the following valency:
Iodine
Name the following:
An acid whose formula is ‘H2CO3’.
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).
Nitrate
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).
Sulphite
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
