Name the type of the structure of silicate in which one oxygen atom of [SiO4]4- is shared?
Sheet silicate
Pyrosilicate
Three dimensional silicate
Linear chain silicate
The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies (in kJ mol-1) of C-C, Si-Si and Ge-Ge bonds, respectively are
348, 167, 180
348, 180, 167
167, 180, 348
180, 167, 348
B.
348, 180, 167
Catenation tendency decreases with the decrease in M-M bond energy. Thus, bond energies of C-C, Si-Si and Ge-Ge must be 348, 180 and 167 kJ mol-1 respectively.
Number of oxygen atoms shared per Si tetrahedron in
I. two dimensional sheet structured silicates
II. cyclic silicates and
III. single strand chain silicates respectively are
3, 3, 2
3, 2, 2
4, 3, 1
4, 3, 2
Pure silicon doped with phosphorus is a
metallic conductor
insulator
n-type semiconductor
p-type semiconductor