Yes, CONDEMNATION is a Scrabble word!

Letter values in Scrabble US: C 3, O 1, N 1, D 2, E 1, M 3, N 1, A 1, T 1, I 1, O 1, N 1.

Is it a valid word?

CONDEMNATION is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

an expression of strong disapproval; pronouncing as wrong or morally culpable
(law) the act of condemning (as land forfeited for public use) or judging to be unfit for use (as a food product or an unsafe building)
an appeal to some supernatural power to inflict evil on someone or some group
the condition of being strongly disapproved of
(criminal law) a final judgment of guilty in a criminal case and the punishment that is imposed

Also: judgment of conviction.