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Electronic configuration of is block of ...

Electronic configuration of is block of elements is ____________

A

`ns^2`

B

`ns^1`

C

`ns^2np^1`

D

`ns^2np^2`

Text Solution

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The correct Answer is:
B
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SURA PUBLICATION- ALKALI AND ALKALINE EARTH METALS-ADDITIONAL QUESTION ( ADDITIONAL CHOOSE THE CORRECT ANSWER)
  1. The radioactive element of group 1 is

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  2. Half life of fracium is

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  3. Electronic configuration of is block of elements is

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  4. The atomic and ionic radii of alkali metals on moving down the group.

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  5. Alkali elements exhibit an oxidation state of

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  6. The hydration enthalpies of alkali metal ions decreases in order.

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  7. The most electro positive element of the periodic table is

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  8. Consider the following statements 1. Alkali metals are soft. 2. ...

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  9. The alkali metals have low melting point. Which of the following alkal...

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  10. The reducing power of a metal depends on various factors. Suggest the ...

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  11. The order of decreasing ionisation enthalpy in alkali metals is

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  12. Which of the following is used in photoelectric cells ?

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  13. Metallic elements are described by their standard electrode potential,...

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  14. Which of the following are the correct reasons for anomalous behaviour...

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  15. ions are found in large proportions in biological fluids.

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  16. Which of the following ions are more responsible for transmission of n...

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  17. Spodumene is the silicate mineral of

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  18. Which of the following metals is most commonly used in photochemical c...

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  19. Which among the folJowing is the strongest reducing agent?

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  20. Why Cs and K are used as electrodes in photoelectric cells ?

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