1) the mental element, meaning the "intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such", and
2) the physical element which includes five acts described in sections a, b, c, d and e. A crime must include both elements to be called "genocide."
Article III described five punishable forms of the crime of genocide: genocide; conspiracy, incitement, attempt and complicity.
Punishment of Genocide
Article I: The Contracting Parties confirm that genocide, whether committed in time of peace or in time of war, is a crime under international law which they undertake to prevent and to punish.
Article II: In the present Convention, genocide means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:
(a) Killing members of the group;
(b) Causing serious bodily or mental harm to members of the group;
(c) Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;
(d) Imposing measures intended to prevent births within the group;
(e) Forcibly transferring children of the group to another group.
Article III: The following acts shall be punishable:
(b) Conspiracy to commit genocide;
(c) Direct and public incitement to commit genocide;
(d) Attempt to commit genocide;
(e) Complicity in genocide. "