Sr-90.
38There can be multiple atoms that have the same number of neutrons, these are called isotopes. The most common isotope of strontium (one of four stable isotopes), is strontium 88. This means that the number of protons and neutrons together in that isotope is 88. And since all atoms of strontium (regardless of their isotope) have 38 protons, that means that the most common isotope of strontium has 50 neutrons.
Number of Neutrons = Mass number - atomic number = 90 - 38 = 52
tellurium The element that has 52 protons is tellurium, and the isotope of tellurium that has 76 neutrons is tellurium-128.
Strontium-88 It is the closest to the Strontium atomic mass.
Technetium has the atomic number 43 but is an isotope with 99 protons
38There can be multiple atoms that have the same number of neutrons, these are called isotopes. The most common isotope of strontium (one of four stable isotopes), is strontium 88. This means that the number of protons and neutrons together in that isotope is 88. And since all atoms of strontium (regardless of their isotope) have 38 protons, that means that the most common isotope of strontium has 50 neutrons.
All molecules of Strontium have the same number of protons, 38.
52 -24 = 28
The atomic number of tellurium is 52. So there are 52 protons and 52 electrons. the number of isotope depends on the isotope. Te-128 has 76 neutrons. Note: Mass number = number of protons + number of neutrons
Number of Neutrons = Mass number - atomic number = 90 - 38 = 52
23 protons, 23 electrons and 29 neutrons in V-52 isotope.
38 protons. If it is neutral, it will also have 38 electrons. The number of neutrons obviously varies, depending on the isotope.
tellurium The element that has 52 protons is tellurium, and the isotope of tellurium that has 76 neutrons is tellurium-128.
Atomic mass is the sum of protons plus neutrons, while atomic number counts only the protons. So subtract atomic number from mass number to get neutron number. For example, Strontium (Sr) has atomic number 38. So Sr-90 holds 90 - 38 = 52 neutrons in its nucleus.
Strontium-88 It is the closest to the Strontium atomic mass.
The isotope 293Uuo has 175 neutrons and the he isotope 294Uuo has 176 neutrons.
Technetium has the atomic number 43 but is an isotope with 99 protons