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The first ionisation energy of beryllium...

The first ionisation energy of beryllium is more than that of boron because

A

B has `1s^(2) 2s^(2) 2p^(1)` configuration

B

B has small atomic size

C

B has higher nuclear charge

D

B has more number of shells

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The correct Answer is:
A
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NARAYNA-PERIODIC TABLE -All Questions
  1. The first ionization energy value of an element area 191, 578,872 and ...

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  2. The peaks in ionisation potential curves are occupied by

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  3. The first ionisation energy of beryllium is more than that of boron be...

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  4. An alkaline earth element has the I(1), I(2) and I(3) values 9.2 eV/at...

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  5. The screening effect of d-electron is

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  6. Which is least for an element

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  7. Element with lowest and highest I.P values in each period respectively...

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  8. Which of the following relation is correct with respect first (I) and ...

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  9. Which of the following elements has the lowest ionization potential ?

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  10. Which one of the following order is correct for the first ionisation e...

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  11. The energy released when a neutral gasous atom, takes up an electron a...

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  12. The units of Electron Affinity are

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  13. The lower electron affinity of fluorine than that of chlorine is due t...

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  14. Which of the following will have almost positive EA(1)

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  15. The element having electron affinity is

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  16. The energy released when an electron is added to a neutral gaseous ato...

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  17. The element with high electron affinity is

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  18. The electron affinity of an atom is numerically equal to the

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  19. X((g))+e rarr X((g))^(-) +E, Here ''E'' is

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  20. The electron affinity of sulphur is -200" kJ/mole". Then the electron ...

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