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प्रश्न
______ of some elements are derived from Latin or Greek names of the elements.
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उत्तर
Symbol of some elements are derived from Latin or Greek names of the elements.
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Write true or false
Milk is an emulsion.
The English name of an element is potassium, its Latin name will be :
Explain the terms 'valency' and 'variable valency'.
How are the elements with variable valency named? Explain with an example.
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
State which element exists in the highest percentage in human body.
Write the radical of the following valency:
Sulphur [Sulphide]
Give the formula of the following acid:
Sulphuric
Give the formula of the following gas:
Nitric oxide
