Complete the paragraph to describe the characteristics of a silicon tetrahydride molecule (sih4). the lewis structure and table of electronegativities are given.

The bonds present in SiH4 are polar due to difference in electronegativity between Silicon and hydrogen

The molecular shape is tetrahedral

the hybridization is sp3

In spite of the polarity of bonds of SiH4, the molecule is non polar due to overall zero dipole moment in the molecule.

The dipole moment is the product of charge and distance between charged particles. It is a vector quantity and thus it is directional

All the four bonds of Si-H are polar however the dipoles of each bond cancel each other and the net dipole is zero

hence the molecule is non polar

So answers are

a) Polar

b) tetrahedral

c) non polar

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.