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Representative elements are elements of...

Representative elements are elements of

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`s`-block and `p`-block elements are together called representative elements.
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First three ionisation energies (in kJ/mol) of three representative elements are given below: {:("Element",IE_(1),IE_(2),IE_(3)),(P,495.8,4582,6910),(Q,737.7,1451,7733),(R,577.5,1817.2745):} then incorrect option is:

Trace elements and tracer elements

Find out total number of representative elements in the given element: Cd, Nb, Ta, Te, Ra, Mo, Po, Pd, Tc

Find out total number of representative elements in the given element: Cd, Nb, Ta, Te, Ra, Mo, Po, Pd, Tc

Assertion: Some essential elements are called structural element of cells Reason: These essential elements are the components of certain biomolecules.

First member of each group of representative elements (i.e., s and p-block elements) shows anomalous behaviour. Illustrate with two examples.

The main group elements i.e. representative elements complete their electron configuration using s and p electrons in the periodic table. These elements range from the most metallic to the most non-metallic with intermediate properties, the semi-metals, in between .The elements which occur at the two extremes of the periodic table are highly reactive and therefore, these highly reactive elements do not occur in free state : they usually occur in the combined forms. Beryllium and aluminium exhibit many properties which are similar, but, the two elements differ in :

Elements are represented by ____

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CENGAGE CHEMISTRY ENGLISH-APPENDIX - INORGANIC VOLUME 1-Exercise very short
  1. Give general electronic configuration of s-block elements.

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

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  3. Representative elements are elements of

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

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

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  6. To which series man-made elements belong?

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  7. What is meant by lanthanides and actinides?

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  8. Which of lanthanides is man-made element?

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

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

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

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

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

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

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

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  16. Why do noble gases have comparatively large atomic sizes?

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  17. Define ionisation energy . What is its value for a hydrogen atom ?

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  18. How does ionisation energy vary (a) down the group and (b) along the p...

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  19. A and B belong to same group of periodic table. A has higher atomic nu...

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  20. The problem of position of isotopes in the periodic table was avoide...

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