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atomic number 68 |
atomic number 69 |
atomic number 7 |
atomic number 70 |
atomic number 71 |
atomic number 72
| atomic number 73
| atomic number 74
| atomic number 75
| atomic number 76
| atomic number 77
atomic number 72
WORDNET DICTIONARY
Noun atomic number 72 has 1 sense
- atomic number 72(n = noun.substance) hafnium, hf - a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons; Array is a kind of metal, metallic element
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