Thorium has an atomic number of 90, or in other words, 90 protons in its nucleus. The mass number or the identification of the -232 isotope with its 142 neutrons is a red herring - in isotopy the number of neutrons may vary but the atomic number or the count of protons is the same. If the atomic number varied from 90 it would by definition no longer be thorium.
Protactinium-231 has 91 protons and 140 neutrons.
Protactinium-234 has 143 neutrons.
Beryllium has four protons.
Beryllium has 4 protons
26 protons
Curium has 96 protons.
15 protons
Osmium has as many protons as it needs
39 protons
2 protons
It has 26 protons.
Bohrium has 107 protons.
26 protons
how many protons does the carbonate ion have?
Oxygen has eight protons.
None -- all protons are protons, which are different from neutrons.
126 protons are in nitride.
Flerovium has 114 protons.
There are 3 protons in lithium