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that one has a bigger mass than the other one for example one has 63 and the other has 65.They have equal number of protons and electrons.Their mass differs due to presence of different number of neutrons.

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Q: What is different in the two isotopes of copper?
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How many isotopes does copper have?

Copper has natural isotopes of 63,67. And other isotopes are known at least from 58 through 70. But these are unstable.


Why do the two isotopes of copper have the same chemical properties?

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How many stable isotopes does the element copper have?

copper has 2 stable isotopes


Is copper isotope the same as copper sulphate?

no! isotopes are different forms of an element with different atomic weight because they have different numbers of neutrons in their nuclei. copper sulfate is a salt formed by reacting copper with sulfuric acid.


Is it typical of transition metals to have isotopes?

Some do, some don't. Scandium and manganese, for example, do not, copper has only two isotopes.


Why is the atomic mass of copper not exactly equal to 64 midway between the mass numbers of copper-63 and copper-65?

Because copper has isotopes. All Copper atoms have exactly the same number of protons, but not all of them have the same number of neutrons. The ones with different numbers of neutrons are known as isotopes. A given sample of Copper will contain various amounts of each of its isotopes. The atomic mass (weight) is an average weight, based on the percentages of the isotopes


How many isotope do copper have?

If you are talking about stable isotopes then there are two, 63Cu and 65Cu.


Two different isotopes of the same atom have what?

Two different isotopes of the same atoms have the same number of protons and electrons; the number of neutrons is different.


Two atoms of same elements with different masses?

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What must be the same to determine if two atoms are copper?

The defining characteristic of an element is the number of protons in the nucleus. Copper always has 29 protons. It may have different numbers of neutrons, as in the common isotopes copper-63 and copper-65 which have 34 and 36 neutrons respectively.


Why two isotopes will have the same electronic configuration?

The isotopes of molybdenum have different electron configurations.


Is it true that the number of protons is different for the two isotopes?

Not; the number of protons in isotopes is identical; only the number of neutrons is different.