Which of the following postulates of Dalton's atomic theory was proved Wrong with the discovery of radioactivity?
Which of the following postulates of Dalton's atomic theory was proved Wrong with the discovery of radioactivity?
The correct option is B Atoms are indivisible.
Explanation for the correct option: (B)
An atom's indivisibility was proven incorrect because atoms can be further divided later on. It contains electrons, protons, and neutrons, which are fundamental subatomic particles. Even neutrons and protons are classified into several types.
Explanation for the incorrect options:
The postulates of Dalton's atomic theory are shown below.
1. All matter is made up of indivisible particles known as atoms.
2. Atoms of the same element have similar shapes and masses, but they are not the same as atoms of other elements.
3. Atoms are neither created nor destroyed.
4. Compound atoms are formed when atoms of different elements combine in fixed, simple, whole-number ratios.
5. Atoms from the same element can combine in multiple ratios to form two or more compounds.
6. The atom is the smallest unit of matter capable of participating in a chemical reaction.
Therefore, the statement given in options (A), (C) and (D) were proved correct with the discovery of radioactivity.
Hence, the correct option is B.
Atoms are indivisible.
Explanation for the correct option: (B)
An atom's indivisibility was proven incorrect because atoms can be further divided later on. It contains electrons, protons, and neutrons, which are fundamental subatomic particles. Even neutrons and protons are classified into several types.
Explanation for the incorrect options:
The postulates of Dalton's atomic theory are shown below.
1. All matter is made up of indivisible particles known as atoms.
2. Atoms of the same element have similar shapes and masses, but they are not the same as atoms of other elements.
3. Atoms are neither created nor destroyed.
4. Compound atoms are formed when atoms of different elements combine in fixed, simple, whole-number ratios.
5. Atoms from the same element can combine in multiple ratios to form two or more compounds.
6. The atom is the smallest unit of matter capable of participating in a chemical reaction.
Therefore, the statement given in options (A), (C) and (D) were proved correct with the discovery of radioactivity.
Hence, the correct option is B.
