Chapter 4: Structure of the Atom

Q1. What is the electronic configuration of sodium (Z = 11)?

Solution

2, 8, 1 or 1s² 2s² 2p⁶ 3s²

Q2. What did Rutherford's alpha particle scattering experiment conclude?

Solution

The experiment concluded that most of the atom is empty space, and the positive charge is concentrated in a small, dense nucleus at the center.