Question

How many of the following molecules are polar? Pcl5 cos xeo3 sebr2

Answer 1

Answer:

Three (3) of the molecules are polar: $CoS,$ $XeO_{3},$ $SeBr_{2}$.

Explanation:

Polar substances have their elements held together by a covalent bond that contain partially positive and negative charges, which results in a difference in the charges' electronegativity difference (usually ranging between 0.4 and 0.7).

• PCl5 is non-polar with a symmetric geometry
• CoS is polar
• XeO3 is polar, with a trigonal pyramidal molecular geometric
• SeBr2 is polar as the difference their electronegativity is about ).5