BF3 and CCl4 are nonpolar molecules because they have a symmetrical arrangement of their atoms, which results in a net dipole moment of zero. On the other hand, CH3OH is a polar molecule because it has a bent shape and the oxygen atom pulls the electron density towards itself, creating a net dipole moment. Therefore, BF3 and CCl4 are nonpolar, while CH3OH is a polar molecule. **

The main difference between CCl4 (carbon tetrachloride) and CH4 (methane) is their chemical composition. CCl4 contains one carbon atom and four chlorine atoms, while CH4 contains one carbon atom and four hydrogen atoms. Additionally, CCl4 is a non-polar molecule, whereas CH4 is a polar molecule due to the difference in electronegativity between carbon and hydrogen. Lastly, CCl4 is a man-made chemical used as a solvent and in fire extinguishers, while CH4 is a naturally occurring gas and is the primary component of natural gas. **

To determine the oxidation state of CCl4, we can use the rule that the sum of the oxidation states of all the atoms in a neutral molecule must equal zero. Since chlorine is more electronegative than carbon, it is assigned an oxidation state of -1. Therefore, the oxidation state of carbon in CCl4 can be calculated using the equation: 4*(-1) + x = 0, where x is the oxidation state of carbon. Solving for x, we find that the oxidation state of carbon in CCl4 is +4. **

The synthesis of CCl4 from sodium hypochlorite is carried out through a series of chemical reactions. First, sodium hypochlorite is reacted with carbon tetrachloride to form chloroform and sodium chloride. Then, the chloroform is further reacted with more sodium hypochlorite to produce carbon tetrachloride and sodium chloride. This process is typically carried out in a laboratory setting under controlled conditions to ensure the safety and efficiency of the reaction. **

Molecular volatile substances are compounds that have low boiling points and easily evaporate into the gas phase at room temperature. This can be explained using the compound CCl4, which is a molecular volatile substance. CCl4 is a nonpolar molecule with weak intermolecular forces, such as London dispersion forces. These weak forces allow the molecules to overcome the attractive forces and escape into the gas phase, making CCl4 a volatile substance. **

The four chlorine atoms of the CCl4 molecule are not arranged in a square shape because of the repulsion between the bonding pairs and the non-bonding pairs of electrons around the central carbon atom. This repulsion causes the chlorine atoms to arrange themselves in a tetrahedral shape, with the carbon atom at the center and the chlorine atoms at the four corners of a tetrahedron. This arrangement minimizes the repulsion between the electron pairs, resulting in a more stable molecular structure. Therefore, the CCl4 molecule does not have a square shape, but rather a tetrahedral shape. **

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