Which of the following is the major drawback of Dalton’s atomic theory?

a)
Atoms of an element have exactly the same mass.

b)
All of the these

c)
Atoms of different elements have same masses.

d)
Atoms are indivisible.

Correct answer is option 'B'. Can you explain this answer?

Question

Which of the following is the major drawback of Dalton’s atomic theory?

a)
Atoms of an element have exactly the same mass.
b)
All of the these
c)
Atoms of different elements have same masses.
d)
Atoms are indivisible.

Correct answer is option 'B'. Can you explain this answer?

Answer

Yes because he had said that substance r made with small particle called atom......and it is not further classified bt now it is classified in neutrons,protons,and electrons........bt the smallest particle of atom is called sting....

Answer

It should be D. All of them were major drawbacks

Answer

The answer should be option d)all of the above
because all the other option are a drawbacks as follows
option a. is a drawback by isotope theory, an element may have two atoms of different masses ex. hydrogen (mass =1) and dueterium (mass =2)

option b. is a drawback as we know there are other elementary particles in atom as electron proton an neutron etc.

option c. is a drawback due to isobar theory, atoms of different elements may be identical in mass ex. argon (mass 40) and calcium (mass 40)

Answer

Beleive me, I didn't studied this ch for my test yet but this is a damn easy q dude.
The answer is B as
1)options A and B are exact opposites so they cannot be placed together in an answer.

2) We can directly tell that all elements do not have EXACTLY SAME MASS ex- mass of hydrogen is 1u but that of oxygen is 16u. The statement is false so obviously it won't be a drawback

3) Now B is the correct option as atoms are sure indivisible, that we all know and so do we know that Dalton's theory is based on atoms and its properties so it might have been a drawback as atom examined wouldn't have been divided back when he made his theory.
(this point might or might not make sense, so , sorry if it doesn't makes sense to you)

so we can conclude that the answer is option B.

Answer

Drawback of  Dalton's atomic theory is that atoms are indivisible means that the atoms can't further be divided, but under some special circumstances, atoms can be further divided into special categories-protons, electrons and neutrons.

Answer

Yes becoz as we know during certain rules atoms can be classified into simple groups neutrons,protons,and neutrons ...but at we go in collage level we get study that they r made up of quarks and leptons .. .

Answer

Major Drawback of Dalton's Atomic Theory: Atoms are indivisible

One of the major drawbacks of Dalton's atomic theory is the statement that atoms are indivisible. This assertion implies that atoms cannot be broken down into smaller particles, which we now know is incorrect.

Explanation:

1. Dalton's Atomic Theory: Dalton's atomic theory, proposed by John Dalton in the early 19th century, laid the foundation for modern atomic theory. According to Dalton, atoms are indivisible and indestructible particles that combine in fixed ratios to form compounds.

2. Atoms are not indivisible: The concept of atoms being indivisible was one of the fundamental principles of Dalton's atomic theory. However, the discovery of subatomic particles such as protons, neutrons, and electrons disproved this notion.

- Subatomic Particles: Subatomic particles are smaller particles that make up atoms. Protons and neutrons are found in the nucleus of an atom, while electrons orbit around the nucleus in energy levels.

3. Electron discovery: In the late 19th century, J.J. Thomson discovered the electron using cathode ray experiments. This discovery indicated that atoms are not indivisible, as electrons are separate entities that exist within atoms.

4. Nuclear model: In 1911, Ernest Rutherford proposed the nuclear model of the atom. His gold foil experiment demonstrated that atoms have a small, dense, positively charged nucleus at the center, surrounded by electrons. This further supported the idea that atoms are not indivisible.

5. Subatomic particles and isotopes: The discovery of isotopes in the early 20th century further emphasized that atoms are not indivisible. Isotopes are atoms of the same element with different numbers of neutrons. This indicates that atoms can have variations in their composition, challenging the notion of indivisibility.

6. Modern atomic theory: Modern atomic theory recognizes that atoms are composed of subatomic particles and can be further divided or rearranged through nuclear reactions or particle interactions. The development of quantum mechanics and the understanding of atomic structure have provided a more accurate description of the atom.

Conclusion:

The major drawback of Dalton's atomic theory is the assertion that atoms are indivisible. Subsequent discoveries of subatomic particles and the ability to break down or rearrange atoms through nuclear reactions have disproven this aspect of Dalton's theory. The advancement of modern atomic theory has provided a more comprehensive understanding of the structure and behavior of atoms.

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