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The formula of water is H2O . Calculate ...

The formula of water is H2O . Calculate its molecular mass.

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The size of the atoms and ions of actinoids decreases regularly along the series. This is due to poor shielding effect of the nuclear charge by 5f-electrons. This gives rise to actinoids contraction. This is due to poor shielding by 5f electrons in the actinoids than that by 4f electrons in the lanthanoids.
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ACCURATE PUBLICATION-D & F BLOCK ELEMENTS -2 OR 5 MARKS QUESTIONS
  1. Define Lanthanoid Contraction and also explain cause of Lanthanoid con...

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  2. Write the formula of potassium chloride . Also name the elements prese...

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  3. Write the formula of calcium phosphate . Also name the elements presen...

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  4. Write the formula of glucose. Also name the elements presents in them.

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  5. Write the formula of chloroform. Also name the elements presents in t...

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  6. Write the formula of bromoform. Also name the elements presents in the...

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  7. Write the formula of hydrogen sulphide. Also name the elements present...

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  8. Write the formula ammonium sulphate . Also name the elements presents ...

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  9. Write the formula lime stone . Also name the elements presents in them...

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  10. Write the formula of magnesium chloride . Also name the elements prese...

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  11. Write the formula of lithium hydroxide . Also name the elements presen...

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  12. The formula of water is H2O . Calculate its molecular mass.

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  13. write formula of sodium oxide and also write elements present in them.

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  14. Chromium is a typical hard metal while Mercury is liquid. Explain.

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  15. First Ionisation Potentials of Zinc, cadmium and mercury are high.

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  16. Balance the following chemical equation: AgNO3+Cu rarr Cu(NO3)2+Ag

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  17. The formula of ammonia is NH3 . Calculate its molecular mass.

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  18. Name the members of the lanthanoid series which exhibit +4 oxidation a...

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  19. What are alloys? Name an important alloy which contains some of the la...

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  20. E^(Theta) of Cu is +0.34 V while that of Zn is – 0.76 V. Explain.

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