The question asks to identify the scientist who suggested that electrons are embedded within a sphere of positive charge.
This model, often called the "plum pudding" model, was proposed by J.J. Thomson following his discovery of the electron.
In this model:
Therefore, J.J. Thomson is the scientist credited with this atomic model.
The discovery of the atomic nucleus by bombarding a thin gold foil with alpha particles is associated with which of the following scientists?
Two isotopes of an element have 17 protons with 18 neutrons and 20 neutrons, respectively. Which of the following is the correct representation of these isotopes?
Identify the element having zero valency
The atomic number of an element is 8. How many electrons will it gain to form a compound with sodium?
An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?
What is the atomic number of nitrogen?
What are isobars?