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Which option is/are correct?...

Which option is/are correct?

A

Atomic radius decreases with increase in `Z_(eff)`

B

The atomic number of 50 elements is present in 5th period

C

Alkaline earth elements are IA group elements

D

Alkali metals are IIA group elements

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The correct Answer is:
A, B
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GRB PUBLICATION-PERIODIC TABLE-Multiple Objective Type
  1. Select the element (s) which belongs to d-block but not transition ele...

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  2. The species having 4 or more unpaired electrons are:

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  3. Which option is/are correct?

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  4. The elements Z = 116 and 119 have been discovered. In which family/gro...

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  5. Those elements impart colour to the flame on heating in it, the atoms ...

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  6. Which of the following sequences contain atomic numbers of only repres...

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

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  8. Which of the following statements are correct?

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

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

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  11. Which of the following have no unit?

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  12. Ionic radii vary in

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

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  14. Which of the following statements are correct?

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

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

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

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

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  19. Which of the following are neutral oxide?

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

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