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How many groups and how many periods are...

How many groups and how many periods are there in long form of periodic table?

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There are `7`periods and `18` groups in the periodic table.
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CENGAGE CHEMISTRY ENGLISH-APPENDIX - INORGANIC VOLUME 1-Exercise very short
  1. State modern periodic law of classification of elements.

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  2. State the reason for periodicity of elements in periods and groups.

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  3. How many groups and how many periods are there in long form of periodi...

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  4. With which quantum number every period in periodic table begins?

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  5. What are s-block elements ? Write their general electronic configurati...

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  6. Give general electronic configuration of s-block elements.

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  7. What are p-block elements? Give their general electronic configurati...

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  8. Representative elements are elements of

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  9. What are d-block elements? Why are they called transition metals?

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  10. The general electronic configuration of d-block elements is

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  11. To which series man-made elements belong?

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  12. What is meant by lanthanides and actinides?

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  13. Which of lanthanides is man-made element?

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  14. What are inner transition metals? Why are they called rare earth metal...

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  15. Give general electronic configuration of f-block elements.

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  16. Which orbitals are filled with electrons in 3rd period?

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  17. Give general electronic configuration of least reactive group. Why are...

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  18. Which of the following requires highest energy: a.M((g)) rarr M((g))...

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  19. How do atomic radius vary in a period and in a group? How do you expla...

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  20. Define (a) ionic radii and (b) covalent radii.

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