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Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of the periodic table of elements. How can you explain a higher stability of `BCI_3` as compared to `TiCI_3`?

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The correct Answer is:
In the group, inert pair effect is maximum in Tl and hense Tl shows mainly +1 state. That is TICl is stable, not `TICl_3`. However, +3 state is stable for B and hence `BCl_3` is quite stable.
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A N EXCEL PUBLICATION-THE P-BLOCK ELEMENTS-QUESTION BANK
  1. Discuss the pattern of variation of oxidation states of B to Tl

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  2. Discuss the pattern of variation of oxidation states of (ii) C to Pb

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  3. Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of t...

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  4. Consider the compounds, BCI3 and C Cl4. How will they behave with wate...

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  5. Explain the shapes of BF3 and BH4^-. Assign hybridisation of Boron in ...

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  6. Write reactions to justify the amphoteric nature of Al.

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  7. What are electron deficient compounds? Are BCl3 and SiCl4 electron def...

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  8. Write down the resonance structures of CO3^(2-) and HCO3^(-)

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  9. Rationalise the statements and give chemical reactions. (i) Lead (II) ...

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  10. Rationalise the statements and give chemical reactions. (ii) Lead (IV)...

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  11. Rationalise the statements and give chemical reactions. (iii) Lead is ...

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  12. Suggest a reason why B-F bond length in BF3 (130 pm) and BF4^(-) (143 ...

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  13. Define dipole moment. The dipole moment of BF3 is zero. Why?

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  14. What happens when Borax is heated

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  15. What happens when Boric acid is added to water

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  16. What happens when Al treated with dilute NaOH

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  17. What happens when BF3 reacted with NH3

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  18. Explain the reaction Si is heated with methyl chloride at high tempera...

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  19. Explain the reaction SiO2 is treated with HF

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  20. Explain the reaction CO is heated with ZnO

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