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Why has the zero group been placed at th...

Why has the zero group been placed at the extreme of the periodic table?

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V PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. A student reported the radii of 'Al^(3+), Mg^(2+)' and 'F' as '136 pm,...

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  2. Elements A, B, C, D and E have the following electronic configuration:...

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  3. Why has the zero group been placed at the extreme of the periodic tab...

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  4. Arrange the following ions in order of decreasing ionic radii : 'Li^(2...

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  5. To which block (s, p, d or f ) does the element with atomic number 50 ...

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  6. Can an element with atomic number 126, if discovered be accommodated i...

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  7. Arrange the following in decreasing order of their van der Waals radii...

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  8. Among the elements B, Al, C and Si. a. Which has the highest first io...

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  9. Give justification, The first lonisation enthalpy of carbon is greater...

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  10. i. Predict my group. My characters are a. electrons in my hand are ju...

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  11. A cation is smaller than the corresponding neutral atom while an anion...

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  12. State the modern periodic law

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  13. The modern periodic table is based on:- variation of densities, vari...

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  14. The elements which form coloured ions and show paramagnetism are: Alka...

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  15. Which among the following is isoelectronic with NH3 ? CH4, CO^+...

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  16. Which is the correct order with réspect to the first ionisation potent...

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  17. The electronegativity of elements from left to right in a period of pe...

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  18. Which element has smallest size?

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  19. The family of elements with the highest ionisation enthalpy:

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  20. Which of the following has largest negative electron gain enthalpy?

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