Come pronunciare "atomic number 69"

• "atomic number 69" pronunciato in Inglese.

Significati e definizioni di "atomic number 69"

Noun

a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime

Sinonimi:

• thulium
• Tm
• atomic number 69