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An element with atomic number 20 will be...

An element with atomic number 20 will be placed in which period of the periodic table?

A

4th period, 2nd group

B

2nd period, 14th group

C

3rd period, 3rd group

D

3rd period, 13th group

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. The decreasing order of second ionisation potential of K, Ca, Ba is

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  2. Highest covalent character is found in

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

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

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  5. The maximum atomic radius exists for

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

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

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

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

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

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

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

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

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  14. Element with electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4...

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  15. The element with atomic number 7 is found in

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  16. Moseley calculated the number of positive charges in the atoms by anal...

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  17. Elements with electronic configuration ns^1 and ns^2 are called

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  18. Atomic weight =

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  19. No. of groups in modern periodic table................

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  20. According to Mulliken, electronegativity =

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