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Isotopes of the same element have the same atomic size because atomic size is determined by the number of protons and this number is always constant for an element. The mass number of isotopes may however vary.

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9y ago
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13y ago
  • Atomic number: Different isotopes of a given element all have the same number of protons and electrons and share a similar electronic structure
  • Chemical properties: Different isotopes exhibit nearly identical chemical behavior as the chemical behavior of an atom is largely determined by its electronic structure. The main exception to this is the kinetic isotope effect: due to their larger masses, heavier isotopes tend to react somewhat more slowly than lighter isotopes of the same element. Refer to link below for more information.
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13y ago

Isotopes are basically elements with the same number of protons and electrons but differing number of neutrons. This makes them similar in terms of chemical properties (as electrons are involved in determining chemical properties), but with different physical properties.

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14y ago

Isotope is the element which has the same atomic number but different mass number. This means that same number of protons in the core, but different number of neutrons. Hence both would have same number of electrons. So both have same chemical properties. But because of difference in the number of neutrons both would have different physical properties.

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14y ago

Their atoms contain the same numbers of protons (and electrons, if the atoms are neutral) and have almost exactly the same chemical reactivity.

The difference is in the number of neutrons they contain, thus changing the atomic weight.

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13y ago

All isotopes of a given element contain the same amount of protons and electrons.

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12y ago

they have the same number of protons and different numbers of neutrons.

neutral isotopes also have the same number of electrons as protons.

ionized isotopes do not.

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10y ago

Generally (excepting isotopes with low atomic number) the difference is minimal, not significative.

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7y ago

All the isotopes of a chemical element have the same number of protons and electrons; but the number of neutrons is different.

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Q: How do isotopes of the same element have the same atomic size?
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Did the existence of isotopes affect the validity of the atomic theory?

Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass). Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass).


Why do all isotopes of an element have the same chemical proporties?

Chemical reactions involve electrons - not protons or neutrons. All isotopes of the same element have an identical number of electrons (just the number of neutrons differs) and hence the chemical properties are identical/very similar.


What are consistent with Dalton's atomic theory as it was originally stated Why a Calcium and titanium atoms have the same mass?

The atomic weight of calcium is 40,078.The atomic weight of titanium is 47,867.----Dalton principles not accepted today:Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. But: Isotopes of a chemical element are not identical.Atoms of different elements combine in simple whole-number ratios to form chemical compounds.But: From many time nonstoichiometric componds are known.3. Atoms cannot be subdivided, created, or destroyed.But: This is valid only for chemical methods.


What is true about elements with low electronegativity?

The atomic size for the element is very large.


How do the atoms of elements 19 and 35 compare in size?

Element 19, potassium: atomic radius = 227 pm. Element 35, bromine: atomic radius = 120 pm.

Related questions

Did the existence of isotopes affect the validity of the atomic theory?

Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass). Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass).


Why do isotopes of the same element have same chemical properties?

The chemical properties of an element are determined by the number and configuration of its electrons, which depends on the size of the charge of the atom's nucleus. The charge is determined by the number of protons. Isotopes of a given element differ only in the number of neutrons, which do not have a charge and thus do not affect the electron configuration.


Why isotopes of the same element have the same chemical properties?

The chemical properties of an element are determined by the number and configuration of its electrons, which depends on the size of the charge of the atom's nucleus. The charge is determined by the number of protons. Isotopes of a given element differ only in the number of neutrons, which do not have a charge and thus do not affect the electron configuration.


Why do isotopes of the same element haves the same chemical properties?

The chemical properties of an element are determined by the number and configuration of its electrons, which depends on the size of the charge of the atom's nucleus. The charge is determined by the number of protons. Isotopes of a given element differ only in the number of neutrons, which do not have a charge and thus do not affect the electron configuration.


Why do all isotopes of an element have the same chemical proporties?

Chemical reactions involve electrons - not protons or neutrons. All isotopes of the same element have an identical number of electrons (just the number of neutrons differs) and hence the chemical properties are identical/very similar.


Is the atomic mass and atomic number the same number?

An Isotope of an element is an atom that has the same number of protons, (number of protons is the defining feature of an element) but different number of neutrons.Because The mass number is the sum of protons and neutrons, different isotopes have different mass numbers.


What is the difference between atomic size and atomic number?

The atomic number of an element determines the number of protons that are present in that element. The atomic size refers to the distance that the outermost valence electrons are from the nucleus.


Which is the smallest element in the periodic table?

Hydrogen has the smallest atomic size of any element.


Which is the element having biggest atomic size?

May be Cesium(Cs)


Which element has the smallest atomic size from first 4 periods?

Hydrogen.


How is the atomic mass determined?

Atomic Mass is the number of protons in an atom plus the number of neutrons in the same atom.


What are consistent with Dalton's atomic theory as it was originally stated Why a Calcium and titanium atoms have the same mass?

The atomic weight of calcium is 40,078.The atomic weight of titanium is 47,867.----Dalton principles not accepted today:Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. But: Isotopes of a chemical element are not identical.Atoms of different elements combine in simple whole-number ratios to form chemical compounds.But: From many time nonstoichiometric componds are known.3. Atoms cannot be subdivided, created, or destroyed.But: This is valid only for chemical methods.