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प्रश्न
Give three reasons why – carbon dioxide is considered a compound, while carbon – an element.
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उत्तर
Carbon dioxide (C02) has a formula and properties of C02 to extinguish fire etc. are quite different from the properties it constituents carbon and oxygen. Oxygen (O) and carbon (C) are elements as these are made up of one kind of atoms. Also, carbon is combustible and oxygen is a supporter of combustion
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संबंधित प्रश्न
Explain the significance of the symbol H.
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
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Give the symbol and the number of atoms of the following elements present in sodium chloride.
State which element exists in the highest percentage in atmosphere.
Give the symbol of the following element:
Chlorine [chloride]
Give the symbol of the following element:
Aluminium
State the type of element for the following:
Lead
State the type of element for the following:
Antimony
Give the formula of the following gas:
Nitrogen
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
