Thulium, gawo 69 la tebulo la periodic. Thulium, chinthu chomwe chili ndi zinthu zochepa kwambiri zapadziko lapansi, makamaka zimakhala pamodzi ndi zinthu zina mu Gadolinite, Xenotime, ore wakuda wagolide wakuda ndi monazite. Zinthu zachitsulo za Thulium ndi lanthanide zimakhalira limodzi mu ore zovuta kwambiri ku nat...
Werengani zambiri