Nitrogen as a Base

[Danieljm1B]

Why is it that a N with a lone pair able to act as a base?

[Jeril Joseph 1B]

Well, the answer is in your question. My guess would be because N has the lone pair, which can be donated to another atom, which is the definition of a Lewis base.

[Haorui Li 1A]

The electron pairs donor is considered to be Lewis base, an N with a lone pair is able to donate its lone pair and form bonds, so it is considered a Lweis base.

[nicknavejas1B]

So all lone pairs act as doners then?

[Chem_Mod]

Often when you see a lone pair, it can act as a Lewis base. Some atoms with lone pairs are better Lewis bases than others (depends on electronegativity, etc). A negatively charged species with a lone pair(s) or an N with a lone pair are usually good indicators of a Lewis base

[Yen Ho Chou 1D]

nitrogen can donate its lone pair

[Gwynneth Orlino 1B]

Nitrogen can donate it's pair of electrons to a Lewis acid, making it a Lewis base.