Question

erwin schrödinger developed the quantum model of the atom. what scientific knowledge was necessary for schrödingers work?

• the discovery of the electron
• the discovery of gamma rays
• the invention of computers for complex calculations
• the invention of microscopes for seeing subatomic particles

Explanation:

The discovery of the electron was fundamental to understanding atomic structure, which was necessary for developing the quantum model of the atom. Gamma - rays discovery is more related to nuclear processes. Computers were not available during Schrödinger's time for his work. Microscopes cannot directly see subatomic particles in the way relevant to quantum model development.

Answer:

the discovery of the electron