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The cause of periodicity of properties i...

The cause of periodicity of properties is

A

Increasing atomic radius

B

Increasing atomic weights

C

Number of electrons in the valence shell

D

The recurrence of similar outer electronic configuration

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MAXIMUM PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-EXAMPLE
  1. Which of the following is not a Dobereinertriad?

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  2. The elements of s and p-block are collectively called ͟ ͟ ͟͟͟

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  3. The cause of periodicity of properties is

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  4. Halogen with highest ionization enthalpy is ͟ ͟ ͟͟͟

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  5. Which of the following represents the most eleciropositive element?

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  6. Second electron gain enthalpy Is ͟ ͟ ͟͟͟

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  7. Correct order of polarising power is Cs^+ , K^+ , Mg^(2+) ,Al^(3+)

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  8. The IUPAC name ofthe element with atomic number is 109 is ͟ ͟ ͟...

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  9. The size of iso electronic species F^-, Ne and Na^+ is affected by

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  10. In transition elements the incoming electron occupies (n-1)d sublevel ...

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  11. The arguments made by two students are as given: Student 1 : 'Hydrogen...

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  12. Match the following:

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  13. a) Which one has greater size, Na or K? b) Justify your answer.

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  14. The general cheracteristics of a particular block of elements is as gi...

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  15. The variation in electron gain enthalpies of elements is less systemat...

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  16. Some elementS are given. Li, Cs, Be, C, N, O F, l, Ne, Xe. a) Arrange...

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  17. a) What is meant by atomic radius? b) Explain covalent radius. c) Wr...

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  18. Consider the statement: 'The element with 1s^2 configuration belongs t...

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  19. The properties of elements are a periodic function of their atomic wei...

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  20. a) Define ionisation enthalpy. b) IE1< IE2 < IE3 What is meant by th...

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