Question

answer the questions​

Answer 1

(please see the attachment )

1. timeline of atomic structure

1903 Hantaro Nagaoka proposed an atomic model called the Saturnian Model to describe the structure of an atom. 1904 Richard Abegg found that inert gases have a “stable electron configuration.” 1906 Hans Geiger invented a device that could detect alpha particles. 1914 H.G.J.

2. structure of atom

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

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