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Write the anomalous behaviours of boron....

Write the anomalous behaviours of boron.

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The anomalous behaviours of boron are as follows :
(a) Boron is a harder element than the other elements of its group . (b) It has high melting and boiling points compared to other members of the group . (c ) It forms only covalent and ionic compounds . (d ) Boron oxide is a weak acid while aluminium and gallium oxides are amphoteric. Indium and thalium oxides are acidic in nature.
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SUBHASH PUBLICATION-P-BLOCK ELEMENTS-Three mark questions and answers
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  2. Write the anomalous behaviours of boron.

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  5. Discuss the basic unit and structure of silicates.

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  17. (a ) Carbon dioxide is non -polar while water is polar. What conclusio...

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  19. Mention three important uses of borax.

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  20. What is allotropy ? Give examples of allotropes.

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