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Statement-1: The atomic radii of the ele...

Statement-1: The atomic radii of the elements of the oxygen family are smaller than the atomic radii of the corresponding elements of the nitrogen family.
Statement-2: The members of the oxygen family are more electronegative and thus have lower values of nuclear charge than those of the nitrogen family.

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Assertion: The atomic radii of the elements of the oxygen family are smaller than the atomic radii of corresponding elements of the nitrogen family. Reason: The members of the oxygen family are more electronegative because they have lower values of nuclear charge, than those of the nitrogen family.

Assertion (A) : The atomic radil of the electrons of oxygen family are smaller than the atomic radil of corresponding electrons of the nitrogen family Reason (R ) : The members of oxygen family are all more electromagative and thus have lower value of nuclear tahn those of the nitrogen famoly

The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen:

Why are pentahalides more covalent than trihalides in the members of the nitrogen family ?

Why is the atomic radius of oxygen slightly more than that of nitrogen?

The atomic radii of the metals of the third (5d) series of transitions elements are virtually the same as those of the corresponding members of the second (4d) series. Explain.

Statement-1: The diffusion rate of oxygen is smaller than that of nitrogen under same conditions of T and P. Statement-2: Molecular mass of nitrogen is smaller than that of oxygen.

Statement-1: Noble gases can be liquefied. Statement-2: Molecular mass of nitrogen is smaller than that of oxygen.

Statement-1 : H_(2)O is liquid whereas H_(2)S is gas . and Statement-2 : Oxygen is more electronegative than sulphur .

MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -REVISION EXERCISE (VERY SHORT ANSWER QUESTIONS (CARRYING 2 OR 3 MARKS))
  1. ELECTRON GAIN ENTHALPY

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  2. How does atomic radius of an element vary across a period fr...

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  3. Statement-1: The atomic radii of the elements of the oxygen family are...

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  4. What are isoelectronic ions ? Account for the decrease in size of the ...

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  5. Ionisation Enthalpy

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

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

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

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

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

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

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  12. The number of valence electrons in Aluminium is

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

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

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

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

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

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  18. Why are cations smaller than neutral atom?

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

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

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