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Explain why the electronegativity of Ga,...

Explain why the electronegativity of Ga, In and Tl will not vary very much.

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Due to the poor screening effect of d electrons in Ga and In and due to poor screeining effect of d- and f -electrons in Thallium the atomic sizes of Gallium, Indium and Thallium do not vary very much. Further the effective nuclear charge increases. So the electronegativities of Ga, In and Tl will not vary very much .
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VGS PUBLICATION-BRILLIANT-THE P-BLOCK ELEMENTS - GROUP 13 -SHORT ANSWER QUESTIONS
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  2. What happens when BF3 is treated with ammonia ?

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  3. What happens when Hydrated alumina is treated with aq.NaOH solution ?

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  4. Give reasons Conc. HNO3 can be transported in aluminium container.

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  5. Give reasons A mixture of dil. NaOH and aluminium pieces in used to...

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  6. Give reasons Aluminium alloys are used to make aircraft body

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  7. Give reasons Aluminium utensils should not be kept in water overnigh...

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  8. Give reasons Aluminium wire is used to make transmission cables .

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  9. Explain why the electronegativity of Ga, In and Tl will not vary very ...

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  10. Explain borax bead test with a suitable example

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  11. Explain the structure of diborane.

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  12. Explain the reactions of aluminium with acids.

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  13. Write a short note on the anomalous behaviour of boron in the group - ...

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  14. Aluminium reacts with dil. HNO3 but not with conc. HNO3-explain.

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  15. Give two methods of preparation of diborane.

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  16. How does diborane react with H2O ?

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  17. How does diborane react with CO ?

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  18. How does diborane react with N(CH3)3 ?

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  19. Al2O3 is amphoteric -explain with suitable reactions.

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  20. Na2B4O7 + Conc. H2SO4 to A underset"(ii) Ignite"overset((i)C2H5OH)to B...

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