His findings were criticized by Soviet physicist Vladimir Kulakov on the grounds that some of the properties Cherdyntsev claimed sergenium had were inconsistent with the then-current nuclear physics.
Temuannya dikritik oleh V. M. Kulakov dengan alasan bahwa beberapa sifat yang diklaim Cherdyntsev dimiliki oleh sergenium tidak sesuai dengan fisika nuklir saat itu.