Nuclides that have the same neutron number but a different proton number are called isotones.
2.
In beta decay, the proton number increases by one.
3.
Because positron emission decreases proton number relative to neutron number, positron decay happens typically in large " proton-rich " radionuclides.
4.
Still other possible beryllium isotopes have even more severe mismatches in neutron and proton number, and thus are even less stable.
5.
Nickel is to the right of cobalt, since its proton number ( 28 ) is higher by one than that of cobalt ( 27 ).
6.
Chemical properties are primarily determined by proton number, which determines which chemical element the nuclide is a member of; neutron number has only a slight influence.
7.
A filled shell would have " doubly magic " ( both its proton number of 114 and neutron number of 184 are thought to be magic ).
8.
Under conditions encountered in astrophysical environments it is difficult to obtain p-nuclei through proton captures because the Coulomb barrier of a nucleus increases with increasing Proton number.
9.
Rutherford realised that if an atom is losing protons, its identity is changing at the same time, since an atom s identity is governed by its proton number.
10.
This placement is consistent with the modern practice of ordering the elements by proton number, " Z ", but that number was not known or suspected at the time.
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