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State Mendeleev.s periodic law....

State Mendeleev.s periodic law.

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What is the basic difference in approach between the Mendeleev's periodic law and the Modern periodic law?

According to Mendeleev's periodic law physical and chemical properties are function of

(a) What was the basis of Mendeleev's Classification of elements ? (b) List two achievements of Mendeleev's periodic tables. (c) List any two observations which posed a challenge to Mendeleev's periodic law.

Use Mendeleev.s periodic Law to predict the formula of Oxides of potassium, aluminium and barium.

According to Mendeleev' periodic law, the elements were arranged in the periodic table in the order of

What physical and chemical properties of elements were used by Mendeleev in creating his periodic table? List two observations which posed a challenge to Mendeleev’s Periodic Law.

State the law on the basis of which Mendeleev classified the elements. Mention the important features of his periodic table. What are the merits and defects of Mendeleev's periodic table ?

State, whether the following statements is True or False: In Mendeleev’s periodic table, all groups are divided into two subgroups

Position of ........ (hydrogen / helium) is controversial in Mendeleev's periodic table.

Describe briefly Mendeleev's periodic table along with its merits.

ICSE-SPECIMEN PAPER 2-SECTION -II
  1. Explain why : Fused CaCl2 or conc. H2SO4 is used in a desiccator.

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  2. Explain why? conc. sulphuric acid should be stoppered.

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  3. Write balanced equations for the following reactions. Water is react...

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  4. Write balanced equations for the following reactions. Steam is passe...

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  5. Write balanced equations for the following reactions. Ammonium dichr...

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  6. Write balanced equations for the following reactions. Lead reacts wi...

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  7. Write balanced equations for the following reactions. Copper reacts ...

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  8. What are isotopes ? Draw the structures of the isotopes of hydrogen.

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  9. Compare three properties of hydrogen which resembles the alkali metals...

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  10. At what centigrade temperature will the volume of a gas at 0^(@)C trip...

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  11. Hydrogen is prepared by Bosch process ? Write the balanced equations...

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  12. Hydrogen is prepared by Bosch process ? How are the products separat...

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  13. Write the name of the product formed and give balanced equation of the...

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  14. Write the name of the product formed and give balanced equation of the...

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  15. Write the name of the product formed and give balanced equation of the...

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  16. Give a general idea of Dobereiner triads with one example.

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  17. State Mendeleev.s periodic law.

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  18. An element X has atomic number 17 and has mass no. 37. Draw its orbi...

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  19. Write the molecular formula of magnesium phosphate.

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  20. What is the percentage of phosphorus in magnesium phosphate ? [At. M...

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