Meaning : A soft silvery metallic element of the rare earth group having no stable isotope. Was discovered in radioactive form as a fission product of uranium.
Synonyms : pm, promethium
Translation in other languages :
आवर्ती कोष्टकातील दूर्मिळ गटापैकी धातुरूप मूलद्रव्य.
प्रोमेथिअमचा आणव क्रमांक एकसष्ठ आहे.Atomic number 61 ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Atomic number 61 ka matlab kya hota hai?