The existence of protons in the atom was experimentally proved by D. Goldstein.

Here's a brief step-by-step explanation:

1. The concept of a positively charged particle in the atom was first proposed by Ernest Rutherford in 1917, but he didn't provide experimental proof.

2. The proton was first observed as a separate entity inside the nucleus of an atom by Eugene Goldstein in 1886.

3. Goldstein used a cathode ray tube and observed that besides the cathode rays moving towards the anode, there were rays moving in the opposite direction. He called these 'canal rays'.

4. These canal rays were positively charged radiations that ultimately led to the discovery of protons.

So, the correct answer is D. Goldstein.

Question

The existence of protons in the atom was experimentally proved by D. Goldstein.

Here's a brief step-by-step explanation:

1. The concept of a positively charged particle in the atom was first proposed by Ernest Rutherford in 1917, but he didn't provide experimental proof.

2. The proton was first observed as a separate entity inside the nucleus of an atom by Eugene Goldstein in 1886.

3. Goldstein used a cathode ray tube and observed that besides the cathode rays moving towards the anode, there were rays moving in the opposite direction. He called these 'canal rays'.

4. These canal rays were positively charged radiations that ultimately led to the discovery of protons.

So, the correct answer is D. Goldstein.

Knowee AI · Accepted Answer

The existence of protons in the atom was experimentally proved by D. Goldstein.

Here's a brief step-by-step explanation:

1. The concept of a positively charged particle in the atom was first proposed by Ernest Rutherford in 1917, but he didn't provide experimental proof.

2. The proton was first observed as a separate entity inside the nucleus of an atom by Eugene Goldstein in 1886.

3. Goldstein used a cathode ray tube and observed that besides the cathode rays moving towards the anode, there were rays moving in the opposite direction. He called these 'canal rays'.

4. These canal rays were positively charged radiations that ultimately led to the discovery of protons.

So, the correct answer is D. Goldstein.

______experimentally proved the existence of protons in the atoms was shown byA Neils Bohr B Chadwick C Madam Curie D Goldstein

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