This scientist was Ernest Rutherford.
J.J Thompson
Probably you refer to Ernest Rutherford.
According to scientist Rutherford, in the core of an atom is a positively charged nucleus and the nucleus is surrounded by negatively charged electrons.
This description of the atom was proposed by Ernest Rutherford through his famous gold foil experiment in 1909. Rutherford's findings led to the development of the nuclear model of the atom, where electrons orbit a dense, positively charged nucleus at the center.
what scientist first described pangea
J.J. Thomson, a British physicist, first proposed the plum pudding model of the atom in 1904. This model described the atom as a positively charged sphere with electrons embedded in it, similar to the seeds in a plum pudding.
Ernest Rutherford is the scientist who discovered that atoms have a positive charge. Through his gold foil experiment, he found that atoms have a small, positively charged nucleus at their center, surrounded by negatively charged electrons.
The scientist who proposed the idea of the atom as a hard sphere was J.J. Thomson. He later refined this model to include the concept of electrons embedded in a positively charged "plum pudding" to account for the behavior of atoms.
J.J. Thomson is the scientist associated with the plum pudding model of the atom. He proposed this model in the early 20th century, suggesting that atoms are composed of negatively charged electrons embedded in a positively charged sphere.
Hooke
cook
Hooke