Unsatisfied octets? *confusion*

[Leeni]

Homework Statement

Draw the Lewis structure for BCl-negative3 first with an unsatisfied octet for boron,
and then with a satisfied octet for boron. I don't understand how to do the last part.

Homework Equations

The Attempt at a Solution

I don't really have one. I tried for a considerable while to no avail. Hence I hope
someone could help me; I'd appreciate it.

 

[NEILS BOHR]

do u mean 3 -??

 

[p21bass]

I'm thinking it means BCl₃? Just written poorly?