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Ionic radii vary in...

Ionic radii vary in

A

inverse proportion to the effective nuclear charge

B

inverse proportion to the square of effective nuclear charge

C

inverse proportion to the screening effect

D

direct proportion to the square of screening effect

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The correct Answer is:
A
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NARAYNA-CLASSIFICATION OF ELEMENTS AND PERIODICITY -EXERCISE - 2 (C.W)
  1. Give five characteristics of p-block elements.

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  2. The 6th period of the periodic table contains

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  3. Ionic radii vary in

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  4. Which of the following has largest radius?

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  5. An element which lies in the same group of the periodic table as mercu...

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  6. The correct order of the second ionisation potential of carbon, nitrog...

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  7. The order of decreasing atomic radii for Be, Na & Mg is

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  8. From which of the following species in gaseous state it is easiest to ...

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  9. Ionisation of energy F^(ɵ) is 320 kJ mol^(-1). The electronic gain ent...

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  10. The element having very high ionization enthalpy but zero electron af...

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  11. The first ionisation potential of Na is 5.1eV. The value of eectrons g...

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  12. Among halogens, the correct order of amount of energy released in elec...

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  13. The formation of oxide ion O^(2-)(g) from oxygen atom requires first a...

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  14. Electronic configuration of four elements A, B ,C and D are given belo...

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  15. The ionisation energy and electron affinity of an element are 13.0ev a...

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  16. The electronegativity of cesium is 0.7 and that of flourine is 4.0 The...

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  17. If the ionization enthalpy and electron gain enthalpy of an element ar...

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  18. Calculate the effective nuclear charge experienced by the 4s-electron ...

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  19. Which of the following element is most electropositive?

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  20. Which of the following elements has zero electron affinity ?

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