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Which of the following statements are co...

Which of the following statements are correct?

A

Helium has the highest first ionisation enthalpy in the periodic table

B

Chlorine has less negative electron gain enthalpy than fluorine

C

Mercury and bromine are liquids at room temperature

D

In any period, atomic radius of alkali metal is the highest

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The correct Answer is:
A, C, D
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GRB PUBLICATION-PERIODIC TABLE-Multiple Objective Type
  1. Which of the following sequences contain atomic numbers of only repres...

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  2. Which of the following elements will gain one electron more readily in...

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  3. Which of the following statements are correct?

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  4. Which of the following sets contain only isoelectronic ions?

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  5. In which of the following options order of arrangement does not agree ...

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  6. Which of the following have no unit?

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  7. Ionic radii vary in

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  8. An element belongs to 3rd period and group-13 of the periodic table. W...

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  9. Which of the following statements are correct?

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  10. Which of the following statements (s)is/are true?

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  11. Which of the following statement(s) is/are true for IA elements?

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  12. The process(es) requiring the absorption of energy is/are:

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  13. Predict block of element whose outer electron set of quantum number n,...

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  14. Which of the following are neutral oxide?

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  15. Which of the following statement(s) is/are correct?

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  16. In which of the following pairs, the first atom is larger than the sec...

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  17. Among the given elements, select those, which are not at the peack of ...

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  18. An element has electronic configuration as 1s^(2),2s^(2)2p^(6),3s^(2)3...

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  19. The correct order of radii is:

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  20. Choose the correct statement.

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