Complete the paragraph to describe the characteristics of silicon tetrachloride molecule (sih4). the lewis structure and the table of electronegativities are given. the bond polarities of sih4 are the molecular shape is and the molecule is blank options 1: polar, nonpolar blank options 2: trigonal pyramidal, trigonal planar, tetrahedral, linear, bentblank options 3: polar, nonpolar

The bond polarities of SiH₄ are polar. The molecular shape is tetrahedral. The molecule is nonpolar.

Explanation

As seen on the diagram, there are four Si-H bonds in a molecule of SiH₄. Electronegativity values:

Si: 1.9H: 2.2

The two atoms differ in electronegativity. As a result, the Si-H bond is polar.

There are four valence electrons in one Si atom. Each of the four electron will go to a Si-H bond. The Si atom in SiH₄ will have no lone pairs. The four Si-H bonds count towards four electron domains. As a result, the SiH₄ atom is tetrahedral.

Dipoles from each Si-H bond are equal. They are poised in a tetrahedral shape. As a result, their dipole balance each other. Overall, SiH₄ molecule will have no net dipole.

The answer to your question really depends on three things: how much water you have, how cold it is to start out, and how cold the things around it are. water actually freezes when it gets to 32 degrees fahrenheit (0 degrees celsius), but the time it takes to get there may be different.  let's start with the first. if you take two glasses, and fill one with a tiny bit of water, and the other about halfway, then put them both in the freezer, the one with less water will freeze first (you can try this at home, but i recommend using plastic cups and not glass ones).  now let's move on to the second part. let's say you have two glasses, and you fill one with really cold water that has been in the refrigerator, and the other with really hot water from the sink. if you put both of them in the freezer, the one that started out colder will freeze first.  for the third part, let's imagine that you have two glasses with the same amount of water in them, and the water is at the same temperature. imagine putting one outside on a really really cold day in georgia, and having a friend in alaska put one outside on the same day. since it would be so much colder in alaska, the glass of water there would freeze before yours.  so, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia.