The number of protons in one atom of any isotope of calcium is 20, which is the atomic number of calcium.
40K
For example a thorium isotope is Th-231 or 23190 Th.
Examples: 4120Ca, Ca-41, calcium-41; only the first is a scientific notation.
The chemical notation is 19F.
The number of protons in one atom of any isotope of calcium is 20, which is the atomic number of calcium.
The most common isotope of calcium (40Ca) has 20 neutrons. You can find this out by subtracting the number of protons (atomic number, 20), from the total AMU's of 40. About 96% of calcium on Earth is calcium-40. Calcium also has eight other isotopes, 41Ca through 48Ca, five of which are radioactive. The second-most prevalent stable isotope is 44Ca which is about 2% of all calcium.
The most common calcium isotope, calcium-40, has 20 neutrons.
40K
For example a thorium isotope is Th-231 or 23190 Th.
The number of neutrons is the difference between the Atomic Mass of an isotope and the atomic number of the element; each isotope of calcium has a different number of neutrons. See the link below for calcium isotopes.
The most stable isotope, calcium-40 has 20 neutrons.
Examples: 4120Ca, Ca-41, calcium-41; only the first is a scientific notation.
Th-234
The chemical notation is 19F.
Yes, the isotope potassium-39 has 20 neutrons.
Ca represents calcium. Calcium-40 represents the isotope of calcium that has a mass number of 40.