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Dalton's theory (circa 1800) in part stated:
"Atoms cannot be created, divided into smaller particles, nor destroyed."
"All atoms of an element are identical and that in particular they have the same mass."
Because Dalton studied only chemical reactions, there are basically 3 inaccuracies in these statements:
1) We now know that atoms are divisible and are composed of smaller, subatomic particles (electrons, protons, and neutrons). Some of these, in turn, are formed from more energetic particles called quarks. Atoms are also subdivided by nuclear decay and fission into other atoms.
2) Atoms of an element are not necessarily identical in mass - elements have isotopes (atoms with this same proton number but different numbers of neutrons) which means that atoms of an element do not have to have the same mass.
3) Atoms cannot be destroyed in chemical reactions, but parts of their mass may be converted to energy in nuclear reactions, which were unknown until the late 19th century. Theoretically, atoms could be created from energy in a reverse reaction.
What else can I help you with?
The weight in daltons of one atom of an element is?
equal to the atomic mass of the element expressed in daltons. It is essentially the mass of one mole of the element in grams.
Why is the plum pudding model considered incorrect in the field of atomic structure?
The plum pudding model is considered incorrect in atomic structure because it was later replaced by the nuclear model, which showed that atoms have a small, dense nucleus at the center, rather than being uniformly distributed like in the plum pudding model.
Which part of daltons atomic theory are known to be incorrect?
Dalton's atomic theory stated that atoms of a given element are identical in all respects, which we now know is incorrect as atoms can exist as isotopes with different numbers of neutrons. Additionally, atoms were thought to be indivisible, but we now know they can be broken down into subatomic particles like protons, neutrons, and electrons.
How many daltons does one molecule of water have?
One molecule of water has a total molecular weight of approximately 18 daltons. This weight is calculated by adding the atomic weights of two hydrogen atoms (each 1 dalton) and one oxygen atom (approximately 16 daltons).
What is the molecular weight of the compound in daltons and how does it convert to grams per mole (g/mol)?
The molecular weight of a compound is the sum of the atomic weights of all the atoms in the molecule. It is measured in daltons (Da) and is equivalent to grams per mole (g/mol). To convert from daltons to grams per mole, you can use the conversion factor 1 Da 1 g/mol.
What part of daltons atomic theory was proved incorrect?
One part of Dalton's atomic theory that was proved incorrect is the assumption that atoms are indivisible and cannot be further subdivided. The discovery of subatomic particles such as protons, neutrons, and electrons showed that atoms are made up of smaller components.
What part of Daltons atomic theory was then proven to be incorrect?
Two principles not valid today:· All atoms of a given element are identical.· A given compound always has the same relative numbers of types of atoms.
How does Daltons atomic theory explain the law of definite proportions?
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The weight in daltons of one atom of an element is?
equal to the atomic mass of the element expressed in daltons. It is essentially the mass of one mole of the element in grams.
What is the approximate mass of a neon-11 atom?
The approximate mass is 11. Technically you could express this in units of daltons as 11 Da (Daltons previously called amu, atomic mass unit, or as 11 (the dimensionless, relative atomic mass which chemists simply call atomic weight) .
If the atomic mass of oxygen is 16 and the atomic mass of hydrogen is 1 how do the current atomic masses compare to daltons?
Atoms are made up of protons, neutrons, and electrons. The atomic mass listed on the periodic table is an average of all the isotopes of an element, which includes the mass of the protons and neutrons. Therefore, the atomic masses listed for oxygen (16) and hydrogen (1) are in daltons.
What is the atomic mass of neon'?
The approximate mass is 11. Technically you could express this in units of daltons as 11 Da (Daltons previously called amu, Atomic Mass unit, or as 11 (the dimensionless, relative atomic mass which chemists simply call atomic weight) .
Which tenet of Daltons atomic theory did Thomson disprove?
Atoms cannot be divided into smaller particles.
What main feature of daltons atomic model was abandoned after thomson's discoveries?
The idea that atoms are indivisible.
Why is the plum pudding model considered incorrect in the field of atomic structure?
The plum pudding model is considered incorrect in atomic structure because it was later replaced by the nuclear model, which showed that atoms have a small, dense nucleus at the center, rather than being uniformly distributed like in the plum pudding model.
How did daltons atomic theory lead to the different model scientists have today?
Dalton's theory was irrelevant to the total compensation of of the Atomic Mass.
Which part of daltons atomic theory are known to be incorrect?
Dalton's atomic theory stated that atoms of a given element are identical in all respects, which we now know is incorrect as atoms can exist as isotopes with different numbers of neutrons. Additionally, atoms were thought to be indivisible, but we now know they can be broken down into subatomic particles like protons, neutrons, and electrons.
