ATOMIC NUMBER 78

(noun)

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There is 1 meaning of the phrase Atomic Number 78.

Synonyms (Exact Relations)

"Platinum is a transition metal with atomic number 78."

"The atomic number 78 indicates that platinum has 78 protons in its nucleus."

"An atom of platinum always has atomic number 78."

"The periodic table lists platinum with atomic number 78."

"The discovery of an element with atomic number 78 was a significant achievement."