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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
Give two applications of chromatography.
Name: Three different forms of carbon
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Give an example of two liquids which form homogenous.
Give an example of two liquids that form heterogeneous mixtures.
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
