Question

Find out the correct and complete Lewis electron-dot diagram for $P{F}_3$?

• A. $F:\stackrel{\cdot \cdot }{\underset{\underset{F}{\cdot \cdot }}{P}}:F$
• B. $:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:\underset{\underset{:\underset{\cdot \cdot }{F}:}{\cdot \cdot }}{P}:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:$
• C. $:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:\underset{\underset{:\underset{\cdot \cdot }{F}:}{\cdot \cdot }}{\underset{\cdot \cdot }{P}}:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:$
• D. $:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:\stackrel{\cdot \cdot }{\underset{\underset{:F:}{\cdot \cdot }}{\underset{\cdot \cdot }{P}}}:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:$
• E. $:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:\stackrel{\cdot \cdot }{\underset{\underset{:\underset{\cdot \cdot }{F}:}{\cdot \cdot }}{P}}:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:$

Answer 1

The correct option is E $:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:\stackrel{\cdot \cdot }{\underset{\underset{:\underset{\cdot \cdot }{F}:}{\cdot \cdot }}{P}}:\stackrel{\cdot \cdot }{\underset{\cdot \cdot }{F}}:$

Complete Lewis electron-dot diagram is shown by a structure in option E. The correct Lewis structure gives the arrangement of all the electrons present in the outermost orbit of the elements.