The significant result deduced from the Rutherford's scattering experiment is that

Options

A. whole of the positive charge is concentrated at the centre of atom
B. there are neutrons inside the nucleus
C. `alpha`-particles are helium nuclei
D. electrons are embedded in the atom

Explanation

To answer the question regarding the significant result deduced from Rutherford's scattering experiment, we can follow these steps:

### Step 1: Understand the Experiment
Rutherford's scattering experiment involved firing alpha particles at a thin gold foil. Most of the alpha particles passed straight through, but some were deflected at large angles, and a few even bounced back.

**Hint:** Consider what the behavior of the alpha particles indicates about the structure of the atom.

### Step 2: Analyze the Results
The deflection of alpha particles suggested that there was a concentrated center of positive charge within the atom. The fact that some alpha particles were deflected at large angles indicated that they were encountering something very dense and positively charged.

**Hint:** Think about what it means for an object to have a concentrated positive charge.

### Step 3: Conclude the Findings
From these observations, Rutherford concluded that the atom consists of a small, dense nucleus that contains most of the atom's mass and all of its positive charge. This nucleus is surrounded by a cloud of electrons.

**Hint:** Reflect on the implications of having a nucleus in the atom and how it relates to the overall structure of the atom.

### Step 4: State the Significant Result
The significant result deduced from Rutherford's scattering experiment is that the whole of the positive charge is concentrated at the center of the atom, which is the nucleus.

**Hint:** Consider how this finding changed the previous models of atomic structure.

### Final Answer
The significant result deduced from Rutherford's scattering experiment is that the whole of the positive charge is concentrated at the center of the atom.