Question

i. Which observation of Rutherford's scattering
experiment established the presence large empty space
in atom?
ii. How was Rutherford's model of atom failed to
explain the stability of an atom?
iii. Name the particles which determine the mass of an
atom.
iv. Why does Helium has Zero valency?
V. The isotopes of an atom are chemically same. Why?​

Answer 1

Answer

iii) If both assertion and reason are false.

iv) If the assertion is true but reason is false.

v) If the assertion is false but reason is true.n.

iii) If both assertion and reason are false.

iv) If the assertion is true but reason is false.

v) If the assertion is false but reason is true.

Explanation:

Answer 2

Answer:

Rutherford considered these observations and he concluded: The fact that most alpha particles went straight through the foil is evidence for the atom being mostly empty space. A small number of alpha particles being deflected at large angles suggested that there is a concentration of positive charge in the atom.