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Fe^(2+) and Fe^(3+) can be distinguished...

`Fe^(2+) and Fe^(3+)` can be distinguished by

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A : Sn^(2+)" and "Fe^(3+) can't remain together in a solution. R : Sn^(2+)" and "Fe^(3+) will react mutually to form Sn^(4+)" and "Fe^(2+) .

The colors of Fe^(2+) and Fe^(3+) respectively are:

Standard electrode potentials are Fe^(2+)//Fe, E^(@) = -0.44 V Fe^(3+)//Fe^(2+), E^(@) = -0.77 V If Fe^(3+), Fe^(2+) , and Fe block are kept together, then

MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -REVISION EXERCISE (VERY SHORT ANSWER QUESTIONS (CARRYING 2 OR 3 MARKS))
  1. What are isoelectronic ions ? Account for the decrease in size of the ...

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  2. Ionisation Enthalpy

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  3. Fe^(2+) and Fe^(3+) can be distinguished by

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

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  5. Write the electronic configuration of the element with atomic number o...

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

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  7. Water is a compound and not a mixture. Justify the statement giving tw...

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  8. The number of elements in the 4th period of periodic table is

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  9. The number of valence electrons in Aluminium is

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  10. Are some essential elements more important than others? Explain.

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  11. Which has greater ionisation energy and why-S or P?

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  12. On moving from left to right in a period in the periodic table, the si...

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  13. For the second period elements the correct increasing order of first i...

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  14. Why are lanthanides and actinides place at the bottom of the periodic ...

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  15. Why are cations smaller than neutral atom?

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  16. Which of the following properties show gradual decrease with increase ...

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  17. Nitrogen has positive electron gain enthalpy whereas oxygen has negati...

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  18. Oxides formed by p-block elements may be (i) basic (ii) acidic (...

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  19. Explain the following a) Electronegatively of elements increase on m...

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  20. What do you understand by the terms (i) Ionization enthalpy (ii) E...

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