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Amphoteric oxide is...

Amphoteric oxide is

A

`Na_2O`

B

MgO

C

`Al_2O_3`

D

`P_2O_5`

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. Electron affinity of Fluorine is less than that of Chlorine because

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  2. Which is the strongest base ?

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  3. Amphoteric oxide is

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  4. Highest oxidation state of +8 is given by

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  5. The most common oxidation state of Lanthanide is

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  6. In the sixth period, the orbitals being filled with electrons are

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  7. Which species has the maximum ionic radius ?

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  8. The decreasing order of second ionisation potential of K, Ca, Ba is

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  9. Highest covalent character is found in

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  10. An element with atomic number 20 will be placed in which period of the...

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  11. In inner transition elements, the differentiating electron enters into...

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  12. The maximum atomic radius exists for

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  13. Na^+ ,Mg^2+ ,Al^3+ ,Si^4+ are isoelectronic. Their ionic size follow...

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  14. The starting element in any period the periodic table is……..

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  15. The ending element in any period in the periodic table is…………

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  16. The general electronic configuration of elements of p-block is represe...

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  17. In a table of elements, each element has similar properties with eight...

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  18. Which period starts with M main shell? Name the sub-shells in it? How ...

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  19. Which is easy to remove electron between the element having electronic...

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  20. For a element, the value of electron gain enthalpy is positive. Which ...

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