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The electronic configuration of an eleme...

The electronic configuration of an element `X` is `1s^(2),2s^(2),2p^(6),3s^(2),3p^(3)`. What is the atomic number of the element which is just below the element `X` in the periodic table?

A

`34`

B

`49`

C

`33`

D

`31`

Text Solution

Verified by Experts

The correct Answer is:
C
`Z=15`,
`._(7)N, ._(15)P, ._(33)` As
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A2Z-CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES-Section D - Chapter End Test
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  3. The pair of amphoteric hydroxides is

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  4. Which of the following oxides is amphoteric is nature ?

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  5. Which has the highest melting point?

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  6. In which of the following arrangements , the order is not correct acco...

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  7. Which one of the following arrangements represents the correct order o...

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  8. What will be the order of first ionisation energy?

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  9. which of the following configurations represents atoms of the elements...

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  10. The first ionisation potential in electron volts of nitrogen and oxyge...

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  11. The elements which occupy the peaks of ionisation energy curve are

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  12. Which is the correct order of ionic sizes (At, No : Ce=58,Sn=50,Yb=70 ...

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  13. A sudden large jump between the values of second and third ionisation ...

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  14. Which element having the following electronic configuration has minimu...

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  19. Be and Al exhibit many properties which are similar. But the two eleme...

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

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  21. The order of the magnitude of first ionisation potentials of Be,B,N an...

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