Mendeleyev’s “prediction about other missing elements — gallium and scandium — also turned out to be very accurate, ” notes the 1995 science textbook Chemistry.
” Ramalan [Mendeleyev] tentang unsur - unsur lain yang hilang ​ — galium dan skandium ​ — juga terbukti sangat akurat, ” komentar buku pelajaran ilmiah tahun 1995, Chemistry.