 Okay, so this one's also on the practice exam place the following in increasing order By bond polarity to CO. So what does that mean? That means that And must be bonded to CL. What's the polarity of that bond? Si bonded to CO. What's the polarity of that bond? And C bonded to CO. What's the polarity of that bond? Okay, so You got to go to your table of electronegativity values, which is given to you guys on the exam I'll give it to you on the exam so we got to figure out well first what's the electronegativity of C up so that's 3.0 Divide okay, so that equals 3.0 divide Nitrogen is 3.0 divide as well so 3.0 minus 3.0 That equals 0.0 So now let's look at silicon that's 1.8. So 3.0 Minus 1.8 that's going to be 1.2 and is 2.5 so 3.0 minus 2.5 That equals 0.5 So if we're putting it in the increasing order, that's from smallest to biggest, right? Which one has the smallest bond polarity? Well, it's clearly the n or Cl bond, right? So you would want to put it something like n is going to be less than Cl and C, sorry, and then C is going to be less than Si. So the most polar of these three is the Si Cl bond and the least polar is the n Cl bond. That's how I would write it, you know.