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Which one of the following group represe...

Which one of the following group represents a collection of isoelectronic species?

A

`Ca^(2+) , Cs^(+) , Br`

B

`Na^(+), Ca^(2+) , Mg^(2+)`

C

`N^(2-), F^(-) , Na^(+)`

D

`Be , Al^(3+) , Cl^(-)`

Text Solution

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The correct Answer is:
C
Count no. of `e^-` . Isoelectronic species `rArr` having same no. of electrons.
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VMC MODULES ENGLISH-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -LEVEL -1
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  2. According to the periodic law of elements, the variation in properties...

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  3. Which one of the following group represents a collection of isoelectro...

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  4. Which of the following elements never has an oxidation state +1?

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  5. The fourth period of modern periodic table includes:

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  6. The ionisation potential is lowest for the

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  7. An element with high electronegativity has:

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  8. Which of the following elements has maximum electronegativity?

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  9. The paramagnetic species among the following is- Na^(+), Zn^(2+), Cu^(...

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  10. The diamagnetic species among the following is: Cu^(2+) , Cr^(3+), C...

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  11. The correct decreasing order of electropositive character among the fo...

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  12. If each orbital can take maximum of three electrons, the number of ele...

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  13. Allred – Rochow’s electronegativity depends upon

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  14. Which of the following transitions involves maximum amount of energy?

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  15. IE(1) and IE(2) of Mg are 178 and 348 kcal mol^(-1). The energy requir...

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  16. The IP(1),IP(2),IP(3),IP(4) and IP(5) of an element are 7.1, 14.3, 34....

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  17. Correct order of electronegativity of N,P,C and Si on Pauling scale is...

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  18. Which of the following have maximum electron affinity?

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  19. The electronic configuration: 1s^(2),2s^(2)2p^(6),3s^(2)3p^(6),3d^(1...

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