mass number of dysprosium = 66 + number of neutrons in a specified isotope
The mass number is different for each isotope.
Dy is dysprosium, and the mass number is 162.50 amu
166
The mass number of Dysprosium (Dy) is typically 162, as it is the most stable and abundant isotope. However, Dysprosium has several isotopes, with mass numbers ranging from 156 to 167. The mass number represents the total number of protons and neutrons in an atom's nucleus.
That element is Indium (In) and it's not a commonly encountered element in chemistry.
The atomic mass of dysprosium is 162.5, though that may just be approximate
Dy is dysprosium, and the mass number is 162.50 amu
166
No, it is not.The atomic mass for an isotope of an element is usually close to a whole number but never exactly so. This is because most elements exist in a number of isotopic forms: they are made up of the same number of protons and electrons but differ in the number of neutrons. So the mass of each isotope of the same element will differ from other isotopes by a whole number of mass units. The atomic mass of the element is the average mass of all its isotopes, weighted together in proportion of the abundance of the elements.The worst offender is dysprosium. The element has 66 proton and electrons 162.5.164-Dy has a mass of 163.929 and accounts for 28.3% of the Dy on earth,162-Dy has a mass of 161.927 and accounts for 25.5% of the Dy on earth,163-Dy has a mass of 162.929 and accounts for 24.9% of the Dy on earth,and there are 4 more isotopes accounting for smaller proportions. When averaged, the atomic mass for Dy is 162.5 - as far from a whole number as you can get!
The mass number of Dysprosium (Dy) is typically 162, as it is the most stable and abundant isotope. However, Dysprosium has several isotopes, with mass numbers ranging from 156 to 167. The mass number represents the total number of protons and neutrons in an atom's nucleus.
In chemistry, the equivalents of a mole are the Avogadro's number, which is 6.022 x 1023, and the molar mass, which is the mass of one mole of a substance in grams.
the mass number is number of protons in an atom, plus the number of neutrons.
95.94 according to my chemistry textbook...
The mass number in chemistry represents the total number of protons and neutrons in an atom's nucleus. It is used to identify isotopes of an element, where different isotopes have the same number of protons but a different number of neutrons.
The symbol for Dysprosium is Dy, and its atomic number is 66.
Mass number in chemistry is the number of nucleons in the nucleus. Nucleon is the common name for proton and neutron. In case of Sodium atom the mass number is 23. If it gets changed by adding one more neutron then it is an isotope which is used in medical field as a radio isotope to study about the blood flow.
A is mass number of the element (also the number of protons and neutrons) and Z is the atomic number of the element (also the number of protons)
That element is Indium (In) and it's not a commonly encountered element in chemistry.