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An element of atom mass 39 has the elect...

An element of atom mass 39 has the electron configuration 2,8,8,1 which of the following statements are correct ? a)it is transition element b)its isotone is `._(18)^(38)Ar` c)its isotone oxide is `M_(2)O` d)its first ionisation value is high

A

The element's valency is 7

B

The element exists as a diatomic molecule

C

The element is of non-metallic nature

D

The element forms a basic oxide

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The correct Answer is:
D
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ERRORLESS -CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES -Ordinary Thinking Objective Questions Atomic and Ionic radii
  1. Which of the following is the correct increasing order of the ionic ra...

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  2. In third row of periodic table the atomic radii from Na and Cl

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  3. An element of atom mass 39 has the electron configuration 2,8,8,1 whic...

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  4. Which of the following has largest size

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  5. The order of magnitude of ionic radii of ions Na^(+),Mh^(2+),Al^(3+) a...

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  6. Point out the wrong statement In a given period of the periodic tabl...

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  7. Which of the following is the biggest ion?

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  8. Which of the following set of elements has the strongest tendency to f...

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  9. In which of the following pairs, the difference between the convalent ...

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  10. The atomic radii in periodic table among elements from right to left

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  11. Of the following the ion with the smallest ionic radius is

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  12. The atomic radius of elements of which of the following series would b...

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  13. Which one of the following should be most stable

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  14. The trivalent ion having size in lanthanide series is

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  15. Chloride ion and potassium ion are isoelectronic. Then

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  16. The correct enegry value order is

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  17. The ionic conductance of the following cations in a given concentratio...

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  18. Which of the following has the largest size?

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  19. Difference between S and S^(2-) as S^(2-) has

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  20. Increase in atomic size down the group is due to

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