Polar/nonpolar bonds?

CCl4 is non polar CHCl4 there is no such compound as valence of carbon is 4 Only CHCl3 is polar positive charge on H CH2Cl2 is non polar CH3Cl2 there is no such compound CH4 non polar covalent compound

CHCl4 and CH3Cl2 don't exist. The others are nonpolar. Chloroform (CHCl3) has a dielectric constant of 4.8 and solvents with values less than 15.0 are usually regarded as nonpolar. When we refer to polar and nonpolar solvents we are not simply talking about polar bonds (the C-Cl bond is a polar one) but the ability of a solvent to solvate particular types of solute and mono, di and tri chloromethanes are all virtually water insoluble, all soluble in hydrocarbons and none of them will dissolve significant amounts of ionic materials ie they are nonpolar.

Okay first step in understanding polarity is to know that Fluorine is the most electronegative atom (3.98 or so). And the greater the difference between the atoms means the greater electronegative. Lets begin, since you know that Fluorine is the most electronegative lets start with that: If you look at the difference in electronegative of Fluorine and Silicon you will see that its quite a lot so that makes it the most polar. And also, in order for it to be polar, the difference has to be above 1.5 or so (cant remember the exact value). But generally, if you move farther from Fluorine you will see the electronegativity decreases and as you move close to it it will start getting higher. Hope this helped! Check the electronegative chart out. It will make more sense.

CHCl4 and CH3Cl2 don't exist. The others are nonpolar. Chloroform (CHCl3) has a dielectric constant of 4.8 and solvents with values less than 15.0 are usually regarded as nonpolar. When we refer to polar and nonpolar solvents we are not simply talking about polar bonds (the C-Cl bond is a polar one) but the ability of a solvent to solvate particular types of solute and mono, di and tri chloromethanes are all virtually water insoluble, all soluble in hydrocarbons and none of them will dissolve significant amounts of ionic materials ie they are nonpolar.