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प्रश्न
What does the symbol '⇌' present in a chemical equation, mean?
उत्तर
'⇌' stands for a reversible reaction.
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संबंधित प्रश्न
How are the elements with variable valency named? Explain with an example.
Give the symbol and the number of atoms of the following elements present in sodium chloride.
Give the symbol of the following element:
Neon
Give the symbol of the following element:
Boron
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).
Bisulphate
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).
Aluminate
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).
Dichromate
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).
Zincate
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
What is the rarest natural element on the earth?
