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प्रश्न
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
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उत्तर
Dalton used symbol [⚪] for oxygen and [☉] for hydrogen.
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संबंधित प्रश्न
How are the elements with variable valency named? Explain with an example.
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
State the type of element for the following:
Calcium
Give the formula of the following gas:
Carbon monoxide
State the valency of the following metallic element and write symbol with the valency
Sodium
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
The pictorial symbol for water given by the alchemists was
In the same way in chemistry, each element is denoted by a ______.
Which letter is never used in any element symbol?
