Calculating Hybridisation and Existence of a Compound with Boron

[Physics lover]

Homework Statement

The question asked the hybridisation and shape of $BO_3^-$

Relevant Equations

N=$(X+Y-C+A)/2$
where C is positive charge on the compound
A is negative charge on the compound
X is valence electrons of central atom
Y is no. of univalent side atoms.
If N=2,then sp.

One would easily calculate its hybridisation by the above formula which comes out to be sp.
But my doubt is that will the compound even exist?As boron will become electron deficient and how we will calculate no. of bond pairs and lone pairs.Please clear my doubt.

 

[Javier0289]

One would easily calculate its hybridisation by the above formula which comes out to be sp.
But my doubt is that will the compound even exist?As boron will become electron deficient and how we will calculate no. of bond pairs and lone pairs.Please clear my doubt.

Have you tried to draw the lewis structure??

 

[Physics lover]

Have you tried to draw the lewis structure??

yes not able to draw it,that's why i asked here.

 

[Javier0289]

yes not able to draw it,that's why i asked here.

If your doubt is only the existence, there's sodium perborate. Check your notes and the formula because there isn't a sp Boron in the lewis structure of such compound

 

[Physics lover]

If your doubt is only the existence, there's sodium perborate. Check your notes and the formula because there isn't a sp Boron in the lewis structure of such compound

Thanks i got it.It's $sp^2$ hybridised and i think it is planar too isn't it?

 

[Javier0289]

Thanks i got it.It's $sp^2$ hybridised and i think it is planar too isn't it?

I don't think is planar, the boron has more character $$sp^3$$... nevertheless you can check it out with the lewis structure in the internet and do an analysis (bond order, paired and unpaired electrons, etc)

 

[Ygggdrasil]

Homework Statement: The question asked the hybridisation and shape of $BO_3^-$

I don't think BO₃^- exists or if it does, it is not a very common species. [BO₃]^3- does exist, however. Perhaps you can clarify with your instructor if BO₃^- is the correct formula.

 

[chemisttree]

Ha ha! Formula for perborate this is...
Chemical formula is not the same as empirical formula. Tricksy, tricksy!