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Why do isotopes of an element have the same atomic number but different mass numbers?
An element's atomic number refers to the number of protons in its nucleus, and this number never varies - an atom with a different number of protons becomes a different element; i.e. an element with one proton is called hydrogen, an element with 2 protons is helium, 3 protons means it's lithium etc). Usually there are the same number of neutrons as there are protons, but this number can vary, and when an element doesn't have the standard number of neutrons it's called an isotope. The mass number of an element is the sum of the number of protons plusneutrons, which is why this number can is different for different isotopes.
What else can I help you with?
Isotopes of an element have a different number of?
neutrons
Isotopes are atoms of the same element that different numbers of?
Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei. This leads to variations in atomic mass for isotopes of the same element.
Are the Isotopes are atoms of the same element with the same number of protons and?
The isotopes of an element have the same number of protons, but different numbers of neutrons.
What is a similarity and a difference between isotopes of an element?
All isotopes of an element have the same number of protons in the atomic nucleus, which is its atomic number on the periodic table. All isotopes of an element contain different numbers of neutrons in their atomic nuclei, which causes the isotopes of an element to vary in mass number (protons + neutrons).
What isotopes of an element contain different Numbers of what?
neutrons
Isotopes of an element have a different number of?
neutrons
Does an isotope of an element have a different atomic mass?
Yes, isotopes of an element have the same number of protons but different numbers of neutrons, leading to variations in atomic mass. This is why the atomic mass on the periodic table is often listed as a range for an element.
Why are the atomic mass numbers of an element not hole numbers?
Its the average of the weight of the different isotopes of that element.
Isotopes are atoms of the same element that different numbers of?
Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei. This leads to variations in atomic mass for isotopes of the same element.
Define the term isotope explain how two isotopes of an element are different?
Isotopes are atoms of the same element that have different numbers of neutrons. Different isotopes of an element have the same atomic number, but different mass numbers. I hope I helped! ^_^
Do isotopes of an element have the same atomic mass but different atomic number?
The different mass numbers are due to different numbers of neutrons.
Are the Isotopes are atoms of the same element with the same number of protons and?
The isotopes of an element have the same number of protons, but different numbers of neutrons.
Isotopes of the same element have differnt?
Isotopes of the same element have different numbers of neutrons in their atomic nuclei. This results in isotopes having slightly different atomic masses while maintaining the same number of protons (which determines the element's identity).
What isotopes of uncharded elements have different numbers?
The atomic number of the isotopes of an element is identical; the mass number is different.
What is a similarity and a difference between isotopes of an element?
All isotopes of an element have the same number of protons in the atomic nucleus, which is its atomic number on the periodic table. All isotopes of an element contain different numbers of neutrons in their atomic nuclei, which causes the isotopes of an element to vary in mass number (protons + neutrons).
How do you know the difference between isotopes and an element?
Isotopes are atoms of an element having different number of electrons.
What isotopes of an element contain different Numbers of what?
neutrons
