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प्रश्न
There are ______ number of known elements.
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उत्तर
There are 118 number of known elements.
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संबंधित प्रश्न
Is food that we eat a mixture ?
Define Elements.
Indicate whether the following statement is true or false:
All elements are artificially prepared
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – two coloured gases (with their colours)
Select the correct answer from the choice given below.
The element which is malleable
Write the names of elements from the following symbol:
Cu
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
State five different characteristics of compounds.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
