| skos:altLabel | - Z
- z
- atomic
- protons
- positive charge
- heavier elements
- ''Z''
- Atomic Number
- High-''Z''
- Number of atoms
- atomic number
- atomic number, Z
- atomic numbers
- effective atomic number (Z)
- high-Z
- high-atomic weight
- number of protons
- number of protons, Z
- numbers of particles in atoms
- proton number
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