Roentgenium

Roentgenium ek chemical element hae, jiske chemical symbol Rg, atomic number 111 aur atomic mass 281 hae. Ii ek badalte dhaatu (Transition metal) hae. Iske 1994 me pawa gais rahaa aur iske naam [[Germany] ke Physicist, Wilhelm Conrad Röntgen, ke honour me rakkhaa gais hae.

vibhag:Badalte dhaatu