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Correct order of radii...

Correct order of radii

A

`Na gt Mg gt Al`

B

`Na^(+) gt Mg^(2+) gt Al^(3+)`

C

`I^(+) lt l lt l^(-)`

D

All of these

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The correct Answer is:
D
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AAKASH INSTITUTE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Assignment (Section -A)
  1. Which of the following electronic structure represents a metallic elem...

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  2. The sceening effect of d-electrons is

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  3. Correct order of radii

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  4. Which pair of elements shows positive elecron gain enthalpy ?

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  5. The elements of same group of the periodic table have

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  6. Which pair of elements has same chemical properties ?

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  7. Write the atomic number of the element present in the third period and...

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  8. Chalcogen are elements of the group

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  9. Which of the following shows diagonal relationship ?

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  10. What are representative elements?

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  11. Which group of elements represents a collection of isoelectronic speci...

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  12. Which of the following electronic configuration represents the most me...

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  13. The group of elements in which the last electron is present the anti-p...

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  14. Which general electronic configuration of the element does not represe...

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  15. Find the incorrect statement.

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  16. The effective nuclear charge across the period (from left to right)

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  17. Which electronic configuration of an element has abnormally high diffe...

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  18. Which of the following has the highest negative electron gain entahlpy...

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  19. The outermost electronic configuration of the most electronegative ele...

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  20. Match the elements given in column (I) with the most appropriat expect...

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