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प्रश्न
What was Mendeleev's basis for the classification of elements?
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उत्तर
Mendeleev's basis for periodic classification:
- Similarities in the chemical properties of elements.
- Increasing order of atomic weights of elements.
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संबंधित प्रश्न
Give a reason for Alkali metals are good reducing agents.
Fill in the blank
_______ is a soft metal.
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Alkali metals
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Give reasons for the following.
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- Immersion rods for heating liquids are made up of metallic substances.
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- Mercury is used in thermometers.
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Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Silver and copper are very good conductors of electricity.
Metals have high melting points.
