Proper indentation in acronym package

Question

I am using the acronym package in the thesis. This is the first time I am using this so don't know much. But I did something like this.

\begin{acronym}
  \acro{2G}{2nd Generation}
  \acro{3GPP}{3rd Generation Partnership Project}
\end{acronym}

This is ok and gives me the acronym list but I find that the output is not properly indented.

so its like

2G 2nd Generation
3GPP 3rd Generation Partnership Project

I want the abbreviations and full forms properly indented so that it looks better. So something like.

2G         2nd Generation
3GPP       3rd Generation Partnership Project

How do I do this?

EDIT: Also, I find that the list is not sorted. How do I get the acronym list sorted by alphabets.

Answer 1

As for your second question, I am not aware of a solution using acronym but it can be done using glossaries. The package you are using at the moment is as far as I can tell nothing more than a tool for an appropriate layout, glossaries can do (much more).

Answer 2

Put the longest acronym in brackets after \begin{acronym}:

\begin{acronym}[3GPP]

(Learned from the acronym documentation.)