Comment prononcer "atomic number 72"

• "atomic number 72" prononcé en Anglais.

Signification et définition de "atomic number 72"

Noun

a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons

Synonymes:

• hafnium
• Hf
• atomic number 72