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Name the elements having highest and low...

Name the elements having highest and lowest ionisation enthalpy.

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Highest value: Helium (He), Lowest value: Cesium (Cs).
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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-QUESTION-ANSWER ZONE FOR BOARD EXAMINATION
  1. Name one property which is not periodic.

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  2. Arrange according to the instructions given the in the bracker: (1) O,...

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  3. Name the elements having highest and lowest ionisation enthalpy.

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  4. What do mean by the statement-covalent radius of H-atom is 0l.37 Å?

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  5. indicate the similarity observed in the electron-gain enthalpy values ...

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  6. Why is the size F^(-) smaller tha that of O^(2-) ion?

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  7. Compare the radii of K^(+) and Cl^(-) ions (each contain the same numb...

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  8. What do you underrstand by negative value of electro-gain enthalpy of ...

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  9. Electronic configuration of the atom of an element is 1s^(2)2s^(2)2p^(...

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  10. Atomic numbers of elements A,B and C are 10,13, & 17 respectively. (1)...

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  11. A, B and C are three elements with atomic numbers 17,18 and 20 respect...

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  12. Outer electronic configuration of 4 elements are as given below follow...

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  13. Write electronic configuration of the element with atomic number 35. w...

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  14. Justify the mentioning two reasons, the inclusion of Ca and Mg in the ...

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  15. Cu, Ag & Au are regarded as transition elements. Why?

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  16. Write down electronic configuration of the element having atomic numbe...

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  17. Can Cu (At. No. 29) and Zn (At. No. 30) be called transition elements?...

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  18. Atomic number of three elements A,B and C are 8, 13 and 17 respectivel...

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  19. Why is atomic size of Ca^(2+) smaller than that of K^(+) ?

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  20. Atomic radius of chlorine atom is 0.99 Å but ionic radius of chloride ...

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