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Why do elements in the same group have s...

Why do elements in the same group have similar physical and chemical properties?

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The elements belonging to the same group have similar electronic configurations, i.e., they have the same number of electrons in their valence shell. This is why they possess similar physical and chemical properties.
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ICSE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-NCERT TEXT-BOOK. EXERCISE (With Hints and Solutions)
  1. Which element do you think would have been named by Lawrence Berkley...

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  2. Which element do you think would have been named by Seaborg's group...

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  3. Why do elements in the same group have similar physical and chemical p...

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  4. What does atomic radius and ionic radius really mean to you?

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  5. How do atomic radii vary in a period and in a group? How do you explai...

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  6. What do you understand by isoelectronic species? Name a species that w...

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  7. What do you understand by isoelectronic species? Name a species that w...

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  8. What do you understand by isoelectronic species? Name a species that w...

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  9. What do you understand by isoelectronic species? Name a species that w...

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  10. Consider the following species: N^(3-),O^(2-),F^(-),Na^(+),Mg^(2+) a...

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  11. What is common between given cations and anions,O^(2-)F^(-),Na^(+),Mg^...

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  12. Explain why cation are smaller and anions larger in radii than their p...

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  13. What is the significance of the terms — ‘isolated gaseous atom’ and ‘g...

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  14. Energy of an electron in the ground state of the hydrogen atom is -2.1...

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  15. Among the second period elements the actual ionization enthalpies are ...

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  16. Among the second period elements the actual ionization enthalpies are ...

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  17. How would you explain the fact that the first ionsiation enthalpy of s...

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  18. What are the various factors due to which the ionization enthalpy of t...

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  19. The first ionisation enthalpy values (in kJ mol^(-1)) of group 13 ele...

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  20. Which of the following pairs of elements would have a more negative el...

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