Bohrium
Atomic number 107 means that every Bohrium nucleus contains 107 protons. That proton count is the element's identity: change it and you no longer have Bohrium.
Start with the nucleus
Atomic number 107 means that every Bohrium nucleus contains 107 protons. That proton count is the element's identity: change it and you no longer have Bohrium.
Bohrium (Bh) is chemical element 107. It belongs to the transition metals, and its reference state at room temperature is not firmly established. Those basic facts are a useful starting point for its chemistry and applications.
In practice, it turns up most often in scientific research.
See the atom
Conceptual visual: electron shells are a learning aid, not a literal picture of quantum orbitals.
What this number means
Atomic number 107 means that every Bohrium nucleus contains 107 protons. That proton count is the element's identity: change it and you no longer have Bohrium.