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The p-Block Elements
Question
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A certain salt X, gives the following results:
It swells up to a glassy material Y on strong heating. 

Answer

Since the salt (X) swells up to a glassy material (Y) on strong heating, it shows that (X) must be a borax and (Y) must be a mixture of sodium metaborate and boric anhydride.

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Some More Questions From The p-Block Elements Chapter

Name the allotropic forms of boron.

Name the element of group 13 which forms only covalent compounds.

Which element of group 13 forms amphoteric hydroxide?

Which element of group 13 forms the most stable +1 oxidation state?

What is the nature of boron trifluoride?

What is the structure of diborane?

Can borax bead test be performed for Ca2+ ion?

Which is the hardest compound of boron?

What is inorganic benzene? Write its formula.