atomic number 43

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Definitions from WordNet

Noun atomic number 43 has 1 sense

technetium, Tc, atomic number 43 - a crystalline metallic element not found in nature; occurs as one of the fission products of uranium
--₁ is a kind of metallic element, metal

Definitions from the Web

Atomic Number 43

Definition:

The atomic number 43 refers to the number of protons in the nucleus of an atom of the chemical element Tc, Technetium.

Sample Sentences:

The atomic number 43 corresponds to the element Technetium on the periodic table.
Technetium, with an atomic number 43, is a silvery-gray metal that is radioactive.
The atomic number 43 indicates the unique identity of Technetium in the periodic table.

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