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प्रश्न
Define: Elements-
उत्तर
Elements : An element is the basic form of matter that cannot be broken down into simpler substances by chemical reactions.
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
A student wants to have 3.011 × 1023 atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of its
Acetate
Select the correct answer from the choice given below.
The symbol of mercury is
State the type of element for the following:
Platinum
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
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
What does the symbol '→' present in a chemical equation, mean?
What is the significance of the symbol of an element?
