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On moving from left to right across a pe...

On moving from left to right across a period, the acidic property of oxide of an element______.

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How does the basicity of the oxides of representative elements vary on moving down a group in the periodic table? On moving across a period from left to right, how does the acidicty of the oxides of representative elements vary?

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What is the cause of periodicity in properties of the elements?

What changes in the following properties are observed while moving from left to right along a period & from top to bottom in a group? (1) Atomic volume, (2) Valency, (3) Electronegativity.

Mention a property whhich is not periodic property of elements.

What do you mean by periodicity of properties of elements?

When light moves from glass to air, the property of it which remains unchanged is

The periodicity is related to the electronic configuration that is all chemical and physical properties are a manifestation of the electronic configuration of the elements.the atomic and ionic radii genreally decrease in a period from left to right as a consequence the ionization enthalpies genrally increase and electron gain enthalpies become more negative across a period in other words the ionization enthalpy of the extreme left element element in a period is the least and the electron gain enthalpy of the element on the extreme right is the highest negative.this results into highly chemical reactivity at the two extremes and the lowest in the centre similarly down the group the increase in atomic and ionic radii result in gradual decrease in ionization enthalpies and a regular decrease (with exception in some third period elements)in electron gain enthalpies in the csea of main group elements. reducing and oxidizing behaviour of the elements metallic and non metallic character of elements acidic,basic,amphoteric and neutral charcter of the oxides of the elements The correct order of the metallic character is

CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-FILL IN THE BLANKS
  1. The element with electronic configuration 1s^(2)2s^(2)2p^(4) is presen...

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  2. The general electronic configuration of transition elements is

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  3. Effective nuclear charge=total nuclear charge-.

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  4. The IUPAC name of the element having atomic number 150 is.

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  5. for homonuclear diatomic molecule, covalent radius=xxinternuclear dist...

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  6. Inter nuclear distance of HCl molecule is 1.36Å and covlaent radius of...

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  7. Covalent radius of an element isthan its van der waals radius.

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  8. Anionic radius isthan the original atomic radius.

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  9. On moving from left to right across a period, the acidic property of o...

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  10. Hydrides of most of the non-metals arein nature.

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  11. The first ionisation potential of carbon is but the second ionisation ...

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  12. Among the halogens. is most reducing in nature.

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  13. Electron affinity of Be and are almost same.

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  14. In a particular energy level, (orbit), the follows the order s gt p gt...

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  15. In case of elements belonging to the same group, ionic radiiwith incre...

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  16. F^(-),Ne,Mg^(2+),Na^(+) are ions.

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  17. Ionisation enthalpy of Cu and K can be explained on the basis of .

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  18. of the atom of any element and the first ionisation enthaly of its ani...

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  19. Atomic mass=Atomic volumexx.

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  20. Low solubility of Li(2)CO(3) and MgCO(3) in water can be exaplained by

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