Thorium (Th).
Thorium (Th)
Thorium (Th)
Atomic weight 232.04
Thorium
Thorium, with the chemical symbol Th, is the chemical element with the atomic number 90.
38
Elements are matter made of one kind of atom.elements
Thorium, or Th, has an atomic number of 90. That means that every atom of thorium has 90 protons. The only naturally abundant isotope of thorium is 232Th, and so therefore it has 232 - 90 = 142 neutrons.
Isotopes - atoms with the same atomic number, number of protons and number of electrons
Thorium is a metal element. There are 90 electrons in a single atom.
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.
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 has 90 electrons.
This is an ionized atom of strontium-88 (+2 charge). Strontium is element number 38, and the most common isotope has an atomic mass of 88. In ionic compounds, it "loses" two electrons.(No neutral atom can have 38 protons and 36 electrons, as the number of protons and electrons, with opposite charges, must always be equal.)
Thorium has 90 electrons.
Atoms that are neutrally charged will have the same number of protons as electrons, because one proton will cancel out one electron. To achieve a net charge of 0, 12 protons must be countered with 12 electrons.
38
A transition element of f-block Thorium has 90 electrons in natural state, it is a Radioactive element.
Zirconium-90 (90Zr) has the atomic number 40, and it has 40 protons. The question asked about a specific isotope of zirconium, and the 90 in this isotope represents the number of protons plus the number of neutrons in 90Zr. The math is simple, and 90 minus 40 tells us there are 50 neutrons in this atom. As the atom was said to be electrically neutral, so that means the number of electrons will be equal to the number of protons. The atom will, therefore, have 40 electrons.
The standard atom has 90 electrons. An ion might have more or less.