Would you expect the nonbonding electron-pair domain in NH3 to be greater or less in size than the corresponding one in PH3?

Video transcript

Hi everyone here, we have a question asking us which of the following statements is correct. A The size of the non bonding electron para domain in phosphorous tri chloride is larger than an aluminum tri chloride. Be the size of the non bonding electron pair domain. And phosphorous tri chloride is smaller than an aluminum tri chloride. See the size of the non bonding electron pair domain and phosphorous tri chloride is equal to that, an aluminum tri chloride or d none of the above. So the electron electro negative activity of aluminum Is 1.5. The electro negativity a phosphorus Is 2.1. So phosphorus is more electro negative than aluminum, which means the electrons will be more attractive to phosphorus than aluminum, which means that the charge density and phosphorus is greater than aluminum, which means that there are stronger repulsion ins in phosphorus than aluminum. So the non bonding electron domain in phosphorus. Try cool ride. It's smaller then in aluminum tri chloride. So our answer here is be the size of the non bonding electron pair domain and phosphorous chloride is smaller than aluminum chloride. Thank you for watching. Bye.