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mass number of dysprosium = 66 + number of neutrons in a specified isotope
The mass number is different for each isotope.
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What is the mass number for Dy?
Dy is dysprosium, and the mass number is 162.50 amu
What is the mass number of Dy?
166
What does Dy stand on the periodic table?
Dyprosium has the formula Dy. It is a radioactive element with an atomic mass of 162.5.
What is the name of a atomic number of 49 and a mass number of 115?
That element is Indium (In) and it's not a commonly encountered element in chemistry.
If an average egg has a mass of 45 gram what mass would a mole of eggs have?
Multiply 45 by Avagadro's Number. It's right trust me, I just did it on mastering chemistry.
What is the mass number for Dy?
Dy is dysprosium, and the mass number is 162.50 amu
What is the mass number of Dy?
166
Is the atomic weight a whole number?
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!
What does Dy stand on the periodic table?
Dyprosium has the formula Dy. It is a radioactive element with an atomic mass of 162.5.
What is the mass number of molybdenum on the periodic table?
95.94 according to my chemistry textbook...
What is the definition of mass numver is chemistry?
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.
What are a and z in chemistry?
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)
What does the Mass number in chemistry represent?
the atomic mass incdicated the amount of protons and neutrons of the atom
What is the name of a atomic number of 49 and a mass number of 115?
That element is Indium (In) and it's not a commonly encountered element in chemistry.
How do you find one mass number when the relative Atomic number is given?
In the Handbook of Chemistry and Physics (and in many other references), there is a "Table of Isotopes" that lists all known isotopes, first by atomic number and then by increasing mass number.
What are the names and mass numbers and electron number and proton number and symblos of all the elements in Chemistry?
Check the Periodic Table of Elements for more information.
What number is divisible by 2 and 3 but not dy 9?
6
