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The number next to the isotope is the mass number- They all have different masses because they have different numbers of neutrons, but the same amount of protons (Remember protons + nuetrons = mass)
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThe number next to an isotope is its mass number. The mass number is the sum of the protons and neutrons in the atom. All isotopes of an element have the same number of protons, but different numbers of neutrons.
Wiki User
∙ 9y agoit is the mass number,for instance carbon usually has a mass of 12,but its isotope carbon-14 has 2 extra neutrons which make its mass 14
Protons plus Neutrons equals mass
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Atoms of same chemical element that have different atomic mass are known as?
Isotopes. They differ in the number of neutrons in the nucleus.
Does the atomic number change in the three isotopes of hydrogen?
No the atomic number is same for the three isotopes of hydrogen (it is 1). The three isotopes of hydrogen differ by the number of neutrons.
Which atoms that are same element and have the same number of protons but have different number of neutrons?
Isotopes are atoms of the same element, having the same number of protons but different number of neutrons.
What number do all the isotopes of carbon has in common and what does that number represent?
The number of protons (the same as atomic number) is specific for all isotopes.
What are different types of the same element called?
If an atom of the same element has the same number of protons but a different number of neutrons, then they are isotopes.
What does the number next to the ions signify?
Positive and negative a charge
Atoms of same chemical element that have different atomic mass are known as?
Isotopes. They differ in the number of neutrons in the nucleus.
What does the number next the isotope signify?
The number next to the isotope is the mass number- They all have different masses because they have different numbers of neutrons, but the same amount of protons (Remember protons + nuetrons = mass)
Do isotopes differ by number of electrons?
Isotopes differ by the number of protons.
Do isotopes have the same A number?
The atomic number is the same for the isotopes of a chemical element.
What atoms with same atomic number but different atomic masses?
Isotopes of the same element have the same number of protons (atomic number) but differ in number of neutrons (hence atomic masses).
What are facts about isotopes?
Isotopes have a different number of neutrons.
What is argons number of isotopes?
There are three natural isotopes.
What do isotopes depend on?
Isotopes have different number of neutrons.
Number of isotopes in lithium?
lithium has 7 isotopes
What are Atoms that vary in the number of neutrons found in their nuclei called?
Different elements with same number of neutrons are known as isotones.
Does the atomic number change in the three isotopes of hydrogen?
No the atomic number is same for the three isotopes of hydrogen (it is 1). The three isotopes of hydrogen differ by the number of neutrons.
