Respuesta :
The Lewis bases are those which can donate electron pair to an acceptor. These electrons can be a pair of electron that is a lone pair, a negative charge or electrons in a [tex]\pi[/tex]-bond.
- In [tex]H-C\equiv C-H[/tex], the presence of [tex]\pi[/tex]-bond make it a Lewis base.
- In [tex]H^{-}[/tex], the presence of negative charge makes it a Lewis base.
- In [tex]NH_3[/tex], the presence of lone pair on nitrogen makes it a Lewis base.
- In [tex]CH_3CH_2CH_3[/tex], there is no lone pair, no [tex]\pi[/tex]-bond, no negative charge so it is not a Lewis base.
Hence, [tex]H-C\equiv C-H[/tex], [tex]H^{-}[/tex], and [tex]NH_3[/tex] are Lewis bases.
[tex]H-C \equiv C-H, H^-,\ and\ NH_3[/tex] are Lewis bases.
What are Lewis bases?
In this, the electron should be donated with respect to an acceptor. These electrons could be pair of electrons. It could be in the form of lone pair, a negative charge or electrons in a -bond.
In [tex]H-C \equiv C-H[/tex] , the presence of [tex]\pi[/tex] -bond makes and refers Lewis base.
In [tex]H^-[/tex] , the presence of a negative charge makes and refers Lewis base.
In [tex]NH_3[/tex] , the presence of lone pair on nitrogen makes and refers Lewis base.
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