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Isotopes. eg U235 and U238. Both Uranium, atomic number 92, bur different isotopes.

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Q: What do you called in an element having the same atomic number but different atomic masses?
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Are atons of an element having the same atomic no but different atomic weights?

Yes, and they are called isotopes.


What do you call the several different forms of an element having different atomic mass and number of neutrons?

We call these different "flavors" of an element the isotopes of that element.


Form of an element having different atomic and number of neutrons?

Isotopes have different numbers of electrons, but not different atomic numbers (numbers of protons) or they'd be different elements.


What element has the Same atomic number but different number of neutrons?

Almost all the elements have different isotopes having same atomic no but different mass no or neutrons.


What differentiates an isotope of an element from any other atom of that element?

Isotopes are species of atoms having same atomic no. but different atomic masses. So an isotope has either lesser or more neutrons than the usual atom of the element ( often called the most abundant isotope).


How do you know the difference between isotopes and an element?

Isotopes are atoms of an element having different number of electrons.


Is an element a pure substance made up of two kinds of atoms?

No, an element is a pure substance having a specified atomic number. The atomic number is the number of protons in the nucleus of the atom. There may be isotopes of an element having different numbers of neutrons in the nucleus.


The element having atomic number 9 most closly resembles in physical and chemical properties the element having atomic number?

17, The next higher atomic number in column 17 of the periodic table. nuber 17 is a non-metal and is called chlorine.


Atoms of the same element having different sums of protons and neutrons are called?

These atoms are called isotopes.


What is an isotope chemistry?

In chemistry isotopes are atoms of an element with different numbers of neutrons and may having have atomic number


Why does chlorine have fractional atomic mass?

Chlorine naturally occurs with mixed isotopes, and the number is an average of the atomic mass of those isotopes, in the proportion they are present. The isotopes have the same atomic number (protons), but their mass number can be different due to the presence of a different number of neutrons. These atoms of an element having a different number of neutrons are called isotopes.


Atoms of an element having a different number of neutrons?

They are called isotopes.