both a and b are true for iodine and radioactive iodine isotope
The atomic number is the same as the number of protons in the nucleus of the particle. Therefore, every atom, ion, and isotope of iodine has an atomic number of 53 (regardless of its mass number).
It's 53, because the number of protons equal the element's atomic number. You can easily find it on a periodic table.
Iodine has 53 electrons. The atomic number equals the number of protons in an atom, and since iodine is neutrally charged, it also equals the number of electrons.
The atomic number of Iodine is 53, and so one atom of Iodine has 53 protons. In order for the charge to be balanced, each atom of Iodine must also have 53 electrons.
79; the mass number is the sum of the protons and neutrons, and the atomic number is the number of protons. So if you take the mass number (protons + neutrons) minus the atomic number (protons), you get the number of neutrons.
The atomic number is the same as the number of protons in the nucleus of the particle. Therefore, every atom, ion, and isotope of iodine has an atomic number of 53 (regardless of its mass number).
The atomic number of iodine is 53. So there are 53 protons and 53 electrons. For I-135 isotope, there are 82 neutrons (135 - 53 = 82)
I-125 contains 73 neutrons. To calculate the number of protons, electrons, and neutrons in an uncharged isotope, follow these rules: Protons = atomic number Electrons = protons = atomic number Neutrons = atomic mass - protons Iodine is number 53 on the periodic table, so its atomic number is 53. It has 53 protons and 53 electrons. This particular isotope of iodine is I-125. So, it has 125-53=72 neutrons.
Iodine has an atomic number of 53, which means it has 53 protons and, in a neutral atom, also 53 electrons. The most common isotope of iodine, iodine-127, has 74 neutrons (127 - 53 = 74). Therefore, in a neutral iodine-127 atom, there are 53 protons, 53 electrons, and 74 neutrons.
The mass number for iodine is 131, which is the sum of the protons and neutrons. Iodine has 53 protons and 53 electrons, if neutral. To find how many neutrons iodine has subtract 53, the number of protons from the mass number of 131. This shows that iodine has 78 neutrons.
Most atomic of iodine has 74 neutrons. The atomic weight of iodine (126.9) represents the combined mass of protons, neutrons, and electrons in the atom. Since the atomic number (53) represents the number of protons in the nucleus, subtracting the atomic number from the atomic weight gives the number of neutrons.
This question is incomplete. One cannot say how many neutrons an atom of iodine has unless one also specifies which isotope of iodine one is referring to. Since the atomic number of iodine is 53, that means that there are 53 electrons and 53 protons in the neutral atom.
The stable isotope of Iodine is 127 atomic weight and atomic number 53. So it has 53 protons and thus also 53 electrons (to balance the positive charge of the protons) . It has 127-53 = 74 neutrons.
To find out how many neutrons are in any element, you must take the atomic mass of the element and subtract the atomic number/ the number of protons. # of neutrons = atomic mass - # of protons This is because the atomic mass of an element is the number of protons added to the number of neutrons. The atomic mass is measured in atomic mass units, where one proton has a mass of 1 amu and one neutron has a mass of 1 amu. Elements also have electrons, however their mass is negligible, which means that it can be ignored because it is minor. In the case of iodine, it's atomic mass is approximately 127 (126.9). It's atomic number, which is also the number of protons and the number of electrons, is 53. Thus, the number of neutrons is: 127 - 53 = 74
An element with seven valence electrons is likely to be a member of group 17 on the periodic table, which includes halogens like chlorine, bromine, and iodine. If we consider the atomic mass of the element and subtract the number of neutrons (74) to find the atomic number, we can conclude that this element is likely to be iodine, which has an atomic number of 53. Therefore, iodine has seven valence electrons and typically has around 74 neutrons in its most common isotope, I-127.
The isotope iodine-122 has 53 protons and electrons and 69 neutrons.
Iodine typically has an atomic number of 53, which means it has 53 protons. The most common isotope of iodine, iodine-127, has 74 neutrons. To find the number of neutrons in an isotope, you subtract the atomic number from the mass number; for iodine-127, that calculation is 127 (mass number) - 53 (atomic number) = 74 neutrons.