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What must be the same and what must be different about the nuclei of two atoms that are related to each other as isotopes?
Wiki User
∙ 13y ago
Same =number of protons
Different =number of neutrons
(also the number of electrons outside the nucleus will be the same).
Wiki User
∙ 13y ago
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Which of Jhon Daltons statements about the atom was proven false because of the discovery of isotopes?
Dalton said that all atoms of one element are identical. they are chemically identical but not identical in mass. he did not know of isotopes, which are chemically identical atoms with different numbers of neutral neutrons. ex: all carbon atoms act the same chemically but some mass at 12, others at 14.
Atomic mass is equivalent to the number of?
The atomic mass is the mass of an atom of that element in AMUs. (Atomic Mass Units)The atomic number, however, is equivalent to the number of protons in an atom of that element.The mass number of an atom is the total number of protons and neutrons in the nucleus of an atom. This is therefore always a whole number. The relative atomic mass of an element is the weighted average of the masses of the isotopes relative to 1/12 of the mass of a carbon-12 atom.It is a weighted average as it takes into account the relative abundances of the different isotopes (atoms of the same element but with different numbers of neutrons) of an element. This number is found in the periodic table.For example chlorine has two isotopes, 35Cl and 37Cl, in the approximate ratio of 3 atoms of 35Cl to 1 atom of 37Cl.The number of protons and neutrons in a 35Cl atom must add up to 35, the mass number. The relative atomic mass of chlorine takes into account both isotopes and is therefore 35.5.
What is the ratio of atoms?
A chemical formula gives the number ratio of the different kinds of atoms present in the compound. This means that the ratios are the same if you count in individual atoms, dozens of atoms, or molecules of atoms.
What are the four states of matter and their properties?
Solid - Atoms in the material are compacted and usually have some sort of crystal structure.Liquid - Atoms less compacted than in a solid, able to freely move around but still held together, mostly through intermolecular forces.Gas - Atoms very spread out, with little interaction between individual atoms.Plasma - A plasma is a gas that is heated to a point where one or more electrons is ripped of the nuclei of the material. Since the ionized nuclei are positive and the electrons negative, they repel each other and separate into polar regions. Plasmas therefore behave somewhat like a gas that has magnetic properties and is a good conductor of electricity.
Why is the density of an object different than the density of water?
Individual atoms may be heavier or lighter. Also, the spacing between atoms may vary.
What is the name for atoms of an element that have different masses?
Isotopes are atoms of an element that have different masses due to a different number of neutrons in their nuclei.
What are Atoms that vary in the number of neutrons found in their nuclei called?
Atoms that vary in the number of neutrons found in their nuclei are called isotopes. Isotopes of an element have the same number of protons but different numbers of neutrons, which can lead to variations in their atomic mass.
Isotopes are atoms whose nuclei have the same atomic number bith with different number of?
Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons in their nuclei. This results in isotopes having the same chemical properties but different atomic masses.
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.
What do isotopes and nucleus have in common?
Isotopes and nuclei are both related to atoms. Isotopes are atoms of the same element with different numbers of neutrons in their nuclei. The nucleus is the central part of an atom that contains protons and neutrons.
How do you know the difference between isotopes and an element?
Isotopes are atoms of an element having different number of electrons.
When atoms of the same element have different mass numbers they are known as?
isotopes
What is the meaninq of two isotopes stable and unstable isotopes?
Isotopes are atoms of the same element with different numbers of neutrons. Stable isotopes have a balanced number of protons and neutrons, meaning their nuclei do not decay over time. Unstable isotopes, also known as radioactive isotopes, have an imbalance of protons and neutrons, causing their nuclei to decay and emit radiation over time.
What does it mean if two atoms are isotopes?
Two atoms are isotopes if they have the same number of protons but different numbers of neutrons in their atomic nuclei. This results in atoms of the same element having different atomic masses.
What are atoms that only differ from the number of neutrons in their nuclei?
isotopes
What atoms has different masses but the same atomic number?
Isotopes of an element have different masses but the same atomic number. Isotopes have the same number of protons and electrons but different numbers of neutrons in their nuclei.
What do you call atoms that have more than 1 type of atom?
Some elements have atoms with differing numbers of neutrons in their nuclei. These different types are called isotopes.
