Number of Neutrons = Mass number - atomic number = 90 - 38 = 52
Sr-90.
Strontium is a mixture of 4 stable isotopes: 84, 86, 87, and 88. Since strontium has 38 protons these isotopes have 46, 48, 49, and 50 neutrons respectively.
Strontium-90 (90Sr) is a radioactive isotope of strontium, with a half life of 28,79 years.
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.
strontium (which the atomic number is not 85 its 38) has 38 protons and 50 neutrons... hope this helps!
Sr-90.
All molecules of Strontium have the same number of protons, 38.
i am not so sure look 4 it on google but not wiki answers!
Strontium is a mixture of 4 stable isotopes: 84, 86, 87, and 88. Since strontium has 38 protons these isotopes have 46, 48, 49, and 50 neutrons respectively.
Stronium with 31 Protons and 37 Neutrons
Strontium-90 (90Sr) is a radioactive isotope of strontium, with a half life of 28,79 years.
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.
is strotium-90 a solid liquid or gas
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.
strontium
strontium (which the atomic number is not 85 its 38) has 38 protons and 50 neutrons... hope this helps!
Yttrium-90 "the slash is important"