Question

In Rutherford experiment, most of the alpha particles go straight through the foil because:

• A. Alpha particles are much heavier than electrons
• B. Alpha particles are positively charged
• C. Most part of the atom is empty space
• D. Alpha particles move with high velocity

Answer 1

The correct option is C Most part of the atom is empty space

Rutherford's model describes atom as a tiny, dense, positively charged core called the nucleus in which almost the entire mass is concentrated, around which electrons circle around at a certain distance. In his experiment, he bombarded a thin gold foil with alpha particles.

Rutherford reasoned that since most of the atom is empty, the alpha particles passed straight through the gold foil.

So, option C is correct.