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प्रश्न
What do the following symbol stand for?
H2
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उत्तर
H2 stands for one molecule of hydrogen.
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of its
Acetate
State which element exists in the highest percentage in atmosphere.
State the type of element for the following:
Lead
State the type of element for the following:
Platinum
State what is meant by the term ‘activity series of metals’.
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).
Permanganate
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).
Sulphate
Symbol of mercury is
