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Define the following terms: Electron ...

Define the following terms:
Electron affinity .

A

energy released when an electron is added to an isolated atom in the gaseous state

B

energy absorbed when an electron is added to an isolated atom in the gaseous state

C

energy required to take out an electron from an isolated gaseous atom

D

power of an atom to attract an electron to itself.

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The correct Answer is:
A
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ICSE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTIONS
  1. The correct order of second ionisation potentials of carbon, nitrogen,...

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  2. The element with configuration 1s^(2) 2s^(2) 2p^(6) 3s^(2) would be

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  3. Define the following terms: Electron affinity .

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  4. The process requiring the absorption of energy is

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  5. Which of the following sets has the strongest tendency to form anions ...

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  6. Assign reasons for each of the following (i) Trasitiono elements exh...

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  7. The electronic configuration of an element is 1s^(2) 2s^(2) 2p^(6) 3s^...

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  8. Elements upto atomic number 105 have been discovered till now. If an e...

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  9. Which is the weakest base among NaOH, Ca(OH)(2), KOH and Zn(OH)(2)?

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  10. Which pair of atomic numbers represents s-block elements ?

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  11. Which pair of elements has the same characteristic chemical properties...

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  12. The values of IE(1),IE(2),IE(3),IE(4) and IE(5) of an element are 7.1,...

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  13. The incorrect statement among the following is

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  14. Ionic radii of

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  15. Correct order of radii

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  16. The correct order of first ionisation potential is

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  17. Among the following complex ions, the species whose central metal atom...

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  18. According to the periodic law of elements, the variation in properties...

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  19. The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and ...

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  20. Which one of the following ions has the highest value of ionic radius?

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