Thorium has 90 protons.
Thorium: 90 protons Uranium: 92 protons
Thorium-232 has 90 protons and electrons and 142 neutrons.
Thorium has 90 protons. It does not matter which isotope is involved.
Thorium has 90 protons.
The atomic number of thorium is 90. so it will always have 90 protons in all its isotope.
Thorium (232Th) has 90 protons, 9o electrons and 142 neutrons.
Thorium 230 has 90 protons and 140 neutrons - the difference is 50.
Thorium-238 has 90 protons and electrons and 148 neutrons.
Thorium has 90 protons and rutherfordium has 104 protons.
Thorium 232 has 90 electrons and protons, also 142 neutrons.
Thorium-232 has 90 protons and 122 neutrons.
Thorium (Th) has 90 protons.