Boron and silicon can be best prepared by the reduction of their oxides by:
Boron and silicon can be best prepared by the reduction of their oxides by:
The correct option is B magnesium
Boron is placed in
group III−A of the periodic table. The valence shell configuration of group III−A element is ns2np1. Therefore, these elements are p−block elements. The
members of group III−A are 5B (boron), 13Al (aluminum), 31Ga (gallium), 49In
(indium) and 81Ti (thallium). As we move down in the group, the metallic
character goes on increasing and m.p. goes on decreasing.
The boric
anhydride thus obtained is mixed with sodium, potassium or magnesium powder and
heated in a covered crucible so that it's reduced to boron.
B2O3+3Mg→2B+3MgO
Amorphous silicon can be extracted when well-powdered quartz is mixed with
magnesium powder and heated in a fire clay crucible along with the certain
quantity of calcined magnesia (MgO).
SiO2+2Mg→Si+2MgO
Thus Boron and
silicon can be best prepared by the reduction of their oxides by Magnesia
Boron is placed in group III−A of the periodic table. The valence shell configuration of group III−A element is ns2np1. Therefore, these elements are p−block elements. The members of group III−A are 5B (boron), 13Al (aluminum), 31Ga (gallium), 49In (indium) and 81Ti (thallium). As we move down in the group, the metallic character goes on increasing and m.p. goes on decreasing.
The boric anhydride thus obtained is mixed with sodium, potassium or magnesium powder and heated in a covered crucible so that it's reduced to boron.
B2O3+3Mg→2B+3MgO
Amorphous silicon can be extracted when well-powdered quartz is mixed with
magnesium powder and heated in a fire clay crucible along with the certain
quantity of calcined magnesia (MgO).
SiO2+2Mg→Si+2MgO
Thus Boron and silicon can be best prepared by the reduction of their oxides by Magnesia
