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Which of the following electronic comfig...

Which of the following electronic comfigurations has the lowest ionosation energy ?

A

`1s^2 2s^2 2p^3`

B

`1s^2 2s^2 2p^5`

C

`1s^2 2s^2 2p^6`

D

`1s^2 2s^2 2p^6 3s^1`

Text Solution

Verified by Experts

The correct Answer is:
D
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MBD PUBLICATION-S- BLOCK ELEMENTS [ALKALI AND ALKALINE EARTH METALS]-QUESTION TYPE
  1. Which has the maximum electropositive character ?

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  2. Which is formed with lithium is heated in air?

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  3. Which of the following electronic comfigurations has the lowest ionosa...

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  4. Lithium is the strongest reducing agent among the alkali metals due to...

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  5. Which alkali metal ion has lowest mobility in aqueous solution ?

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  6. In NaCl, the Cl^- ions occupy the place in a fashion of:

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  7. When sodium metal heated in dry ammonia, the compound formed is:

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  8. What types of ions are present in anhydrous mixture of KF and Hf ?

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  9. KO2 is used in oxygen cylinders in space and submarines because it

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  10. The hydroxide with least ksp value at room temperature is:

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  11. Which sulphate has the highest solubility in water ?

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  12. Which pairs represent isoelectronic species ?

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  13. Which of the following represents an alkaline earth metal on the basis...

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  14. The electronic configuration of calcium is represented as:

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  15. Which is the correct order of increasing basic strength ?

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  16. The decreasing order of IE2 values in K, Ca and Ba is:

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  17. The most electropositive among the following is:

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  18. Which of the following is present in chlorophyll ?

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  19. The compounds with maximum and least ionic characters among the follow...

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  20. The correct order of solubility of the sulphates of alkaline earth met...

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