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Define the mordern periodic law . Dis...

Define the mordern periodic law . Discuss the construction of the long form of the periodic table .

A

It reflects the sequence of filling the electrons in the order of sub energy levels sp,d and f

B

It helps to predict the stable valency states of the element

C

It reflects trends in physical and chemical properties of the elements

D

It helps to predict the relative ionicity of the bond between any two elements

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The correct Answer is:
B
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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -3
  1. Some statements are given. Among them the correct statements are (a...

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  2. Elements X, Y and Z have atomic numbers 19, 37 and 55 respectively. Wh...

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  3. Define the mordern periodic law . Discuss the construction of t...

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  4. The compound of vanadium has magnetic moment of 1.73 BM. The vanadium ...

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  5. The frequency of the characterstic X ray of K(alpha) line of metal tar...

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  6. (IE)1 and (IE)2 of Mg((g)) are 740, 1540 kJ mol^(-1) . Calculate perce...

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  7. Use (IE) and (EA) listed below to determine whether the following proc...

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  8. If Aufbau rule is not followed, K - 19. will be placed in

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  9. M((g)) to M((g))^(+) + e^(-) , DeltaH=100 eV , M((g)) to M((g))^(2+) +...

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  10. Which of the following atomic number is named as Ununtrium.

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  11. The IUPAC name of ""(104)Rf is

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  12. The IUPAC name of ""(107)Bh is

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  13. Screening constant depends upon A) Number of inner shells B) Numbe...

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  14. Screening constant of Be is 2.05 and that of B is

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  15. Write any two properties which are decreased from top to bott...

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  16. Screening by inner electrons will be more effective in

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  17. Correct order of first ionisation potentials

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  18. In a period from left to right A) nuclear charge increases B) eff...

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  19. Relation between oxidation numbers and electronegativity is given by

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  20. Screening effect influences A) atomic radius B) Ionisation enthal...

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