90 in ground state
Thorium is a metal element. There are 90 electrons in a single atom.
Alpha particles but also electrons and gamma radiations (Th 232).
Hazards and Health Considerations: Thorium presents both a toxic and radiological hazard. Toxicologically, it causes heavy metal poisoning similar to lead or the uranium isotopes. Biologically, thorium accumulates in the skeletal system where it has a biological half-life of 200 years, the same as plutonium. An M 17 protective mask and standard anti-contamination clothing will adequately protect against thorium.
Mercury has 80 electrons.
Thorium 230 is an alpha emitter with half life 75,380 years. Therefore it is dangerous if ingested. Alpha particles don't penetrate the skin, so it would not be dangerous to handle carefully, but if ingested alpha particles can damage internal organs. Thorium 234 is a beta emitter with half life 24.1 days. So 230 is the more dangerous.
Thorium is a metal element. There are 90 electrons in a single atom.
Thorium has 90 electrons.
Thorium 230 has 90 electrons and 140 neutrons.
Thorium has 90 electrons.
Thorium 230 has 90 protons and 140 neutrons - the difference is 50.
232Th has 142 neutrons and 90 protons and electrons.
Thorium has 6 valence electrons.
Thorium (Th).
Thorium-232 has 90 protons and electrons and 142 neutrons.
Thorium has 90 protons. So for a neutral atom, there has to be 90 electrons. 230 is the total number of nucleons. ie 90 protons and 140 neutrons.
Thorium, with the chemical symbol Th, is the chemical element with the atomic number 90.
Thorium's atomic number is 90. Thus, thorium has 90 protons per atom. To be electrically neutral then, thorium must also have 90 electrons per atom.