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प्रश्न
Give the formula of the following gas:
Nitrous oxide
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उत्तर
Nitrous oxide – N2O
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Helium by ‘He’
Give the symbol of the following element:
Radon
State the type of element for the following:
Mercury
Write the radical of the following valency:
Zinc
Write the radical of the following valency:
Potassium
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 three metals whose symbols are derived: from their Latin names.
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
Mass of one atom of oxygen is
