p-Block elementsHard

Question

Which of the following facts regarding boron and silicon is true ?

Options

A.Boron is used to make boron steel or boron carbide control rods for nuclear reactor.
B.Boron and silicon form halides which are not hydrolysed.
C.Boron and silicon react with magnesium to form magnesium boride and magnesium silicide which are decomposed by acids to give volatile borane and silane, respectively.
D.Both boron and silicon react with alkali to form borates and silicates containing BO33- and SiO44- tetrahedral units, respectively.

Solution

BCl3 + 3H2O H3BO3 + 3HCl ; SiCl4 + 3H2O H2SiO3 + 4HCl

Create a free account to view solution

View Solution Free
Topic: p-Block elements·Practice all p-Block elements questions

More p-Block elements Questions

Diamond and graphite are :...The pair of amphoteric hydroxides is...H3PO2 $\overset{\quad\Delta\quad}{\rightarrow}$ (X) + PH3 ; is...Consider the following reactions.$ $$${{Na}_{2}{\text{ }B}_{4}O_{7}\overset{\phantom{\Delta\ }}{\rightarrow}2X + Y }{{Cu...XeF6 on hydrolysis plroduces...