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Calculate the Effective nuclear charge o...

Calculate the Effective nuclear charge of helium.

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Verified by Experts

`Z_("eff")=Z-S`
`Z_("eff")=2-0.30("for" 1se^(-)=0.30)`
`Z_("eff")=1.70`
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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-ADDITIONAL SHORT ANSWERS
  1. Calculate the Effective nuclear charge of helium.

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  2. Write the name and deduce the atomic number of the following element ...

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  3. Lanthanoids and actinoids are placed in separate rows at the bottom of...

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  4. Describe in drief Lother Meyer's classification of elements.

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  5. Explain classification of elements based on Newland 's law of Octaves...

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  6. Justify the given statement with suitable examples the properties of t...

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  7. State the findings of modern periodic law.

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  8. State Mendeleev's period law.

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  9. What are the demerties of long form periodic table.

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  10. What are transuranium elements?

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  11. What are transfermium elements?

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  12. How many elements can be accommodated in the long form of the periodic...

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  13. Name the p block elements that exist as liquids at room temperature.

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  14. What are representative elements?

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  15. What are metalloids ? Give example.

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  16. The number of elements in the first period is only 2. Give reason.

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  17. The elements Z=117 and 120 have not yet been discovered. In which fami...

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  18. Arrange the following elements in the increasing order of metallic cha...

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  19. Predict the periods and blocks to which each of the following elements...

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  20. Why are noble gases chemically inert?

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