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Why Zn, Cd and Hg are considered as soft...

Why Zn, Cd and Hg are considered as soft metals?

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• Zinc, cadmium and mercury are metals with low melting points. This is because they have an especially stable electronic configuration.
• Mercury is so poor at forming metallic bonds that it is liquid at room temperature.
• Zinc and cadmium are soft metals that oxidize to the +2 oxidation states.
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FULL MARKS-PERIODIC CLASSIFICATION OF ELEMENTS -Additional Questions(2 MARK QUESTIONS)
  1. What are d-block elements? Why are they called so?

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  2. Elements Zn, Cd and Hg with electronic configuration (n-1)d^(10) ns^(2...

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  3. Why Zn, Cd and Hg are considered as soft metals?

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  4. Why d- block elements are known as transition element ?

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  5. What are f-block elements? How many series are there? Why they are cal...

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  6. Give the general electronic configuration of lanthanides and actides?

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  7. What are lanthanides and actinides?

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  8. What are semi - metal ? Give example.

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  9. What are periodic properties ? Give example.

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  10. Define ionic radius.

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  11. Cationic radius is smaller than its corresponding neutral atom. Justif...

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  12. Anionic radius is higher than the corresponding neutral atom. Give rea...

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  13. What are isoelectronic ions ? Give examples.

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  14. Define lonization energy. Give its unit.

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  15. Ionization energy of beryllium is greater than the ionization energy o...

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  16. Ionization energy of nitrogen is greater than the ionization energy of...

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  17. Define electron gain enthalpy or electron affinity. Give its unit.

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  18. Electron gain enthalpy is F is less negative than Cl Why ?

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  19. Electron affinity of oxygen is less negative than sulphur. Justify thi...

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  20. Explain about the factors that affect electronegativity.

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