Yes, empty elements of the kind ...
... are considered the "proper" way to go about these. Note, however, that just about every XML parser out there will equate the above with:
So they will both be considered to be the same, which is to say, empty.
Not to be rude or anything, but if you work in an environment where big disputes are occuring over this, then there is some major nerdiness going on. Beware!