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प्रश्न
Define: Compounds
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उत्तर
Compounds : A compound is a pure substance formed by the chemical combination of two or more elements in a fixed ratio by mass.
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संबंधित प्रश्न
Name the element used as a standard for atomic mass scale.
Explain the terms ‘chemical formula’.
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Ca2+ NO31-
State the type of element for the following:
Zinc
State the type of element for the following:
Phosphorus
Write the radical of the following valency:
Sodium
Write the chemical formula of the following:
calcium sulphide
Write the chemical formula of the following:
magnesium 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).
Bisulphite
Name three metals whose symbols are derived: from their Latin names.
