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प्रश्न
State the type of element for the following:
Calcium
विकल्प
Metal
Non-metal
Metalloid
Noble gas
उत्तर
Metal
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Write the symbols of helium, silver, krypton, antimony, barium.
Define: Elements-
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.
Copper by ‘Cu’
Give the symbol of the following element:
Sodium
Give the symbol of the following element:
Sulphate
Write the radical of the following valency:
Sulphite
Give the formula of the following acid:
Sulphuric
Give the formula of the following acid:
Carbonic
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).
Bisulphite
