Question

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An early model for an atom considered it to have a positively charged point nucleus of charge Ze, surrounded by a uniform charge density of negative charge up to a radius R. The atom as a whole is neutral. For this model what is the electric field at a distance r from the nucleus?

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Answer 1

In Thomson's model, the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged “plums” surrounded by positively charged “pudding”.

Answer 2

Explanation:

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Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometers, or 4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m, between the infrared and the ultraviolet.