Number of neutrons = Mass number - Number of protons = 127 - 53 = 74
Tungsten has 74 protons and 74 electrons, but it has 110 neutrons. Tantalum has 108 neutrons, but 73 protons and 73 neutrons.
Iodine (I) has 53 protons and 74 neutrons.
Neutrons in iodine: 74.
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.
Number of neutrons = Mass number - Number of protons = 127 - 53 = 74
Iodine has 53 protons. Iodine 126 has 126 - 53 = 74 neutrons. So iodine 126 is called iodine 16 because it has 53 protons and 74 neutrons. There are other types of iodine, called neuclides of iodine, which have different numbers of neutrons. All of them have 53 protons. So iodine 141 has 53 protons and 141 - 53 = 88 neutrons.
A typical atom of iodine contains 74 neutrons.
iodine iodine
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.
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.
53