alleryStart learning →Rutherford's experiment showed that an atom is:
ASolid throughout in the standard view
BA continuous wave
CMade of negative gel only
DMostly empty with a tiny dense positive nucleus
Answer & Solution
Correct answer: D. Mostly empty with a tiny dense positive nucleus
1. Most alpha particles passed straight through the gold foil.
2. So most of the atom must be empty space.
3. A few alphas bounced back at large angles.
4. So the positive charge and mass must concentrate in a tiny nucleus.
5. Hence the atom is mostly empty with a small positive nucleus.
_Source: Selina Concise Chemistry ICSE Class 9, Ch 4 'Atomic Structure'_
Keep practising Atomic Structure
Browse all Atomic Structure questions for ICSE Class 9, or explore more Chemistry topics.
Related questions
Which sub-particle was discovered LAST?If an element has the configuration 2, 8, 8, 1, its valency and likely group are:Why does the atomic mass of chlorine (35.5) lie between two integers?An atom of oxygen has Z = 8 and A = 16. Number of neutrons is:Why are protons and neutrons together called nucleons?Isotopes of hydrogen include:Chlorine (Z = 17) becomes Cl- by gaining how many electrons?Magnesium (Z = 12) forms Mg^2+ by losing how many electrons?