3 adjectives to describe null

If I can prove that it hath been the universal practice of the Church 'in nudum apertum caput manus imponere', doth it follow that this is essential, and the contrary null?

No doubt he was encouraged, if not positively ordered to do this, by the Government of Bern, many members of which are supposed to have received bribes from the British Government to render the decreed neutrality null and void.

That is to say, that each State has the right to determine for itself when an unwarranted power has been assumed by the general government, and in such a case to declare the obnoxious law null and of no force within her own boundaries.

3 adjectives to describe  null