Will definitely be Vs will be definitely

Why are we saying "There will definitely be some information", instead of "There will be definitely some information"?

Thanks,

There are certain adverbs in English that are typically placed in mid position (as opposed to front or end position). Among these mid-position adverbs are 'certainty' adverbs such as definitely, probably, clearly, obviously.

How mid-position adverbs are placed exactly depends on the verb construction they are modifying. In the case of a single verb form, the adverb precedes that form:

• She definitely said that.

However, if the verb is the copula to be, then the adverb typically comes after:

• She is definitely the best singer.

When the verb construction includes a modal, then the adverb comes between the modal and the lexical verb:

• She will definitely win the competition.

So the grammatical sentence in the present case is:

• There will definitely be some information.

Note, however, that the 'rules' above are not set in stone. Adverb positioning is pretty flexible. So you may see:

• There definitely will be some information.

Or

• There will be some information, definitely.

In both these cases, the untypical positioning serves to emphasise the word definitely.