According to the Thomson's Plum Pudding Model of an atom, the structure of an atom is similar to a chocolate chip cookie where the electrons can be represented as the chocolate chips and the positive charge as dispersed in the rest of the cookie. (2024)

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What is the atom like according to the plum pudding model? ›

In Thomson's plum pudding model of the atom, the electrons were embedded in a uniform sphere of positive charge, like blueberries stuck into a muffin. The positive matter was thought to be jelly-like, or similar to a thick soup.

According to the Thomson's Plum Pudding Model of an atom, the structure of an atom is similar to a chocolate chip cookie where the electrons can be represented as the chocolate chips and the positive charge as dispersed in the rest of the cookie.

In this model, the plums represent negatively charged electrons which can be plucked out of the atom, leaving behind some positively charged pudding.

The model compares the positive sphere of the atom to a plum pudding, where the negatively charged electrons are embedded in the positively charged matter, just like raisins in a plum pudding. Therefore, the correct option is "An atom consists of positively charged matter that contains negatively charged particles."

This model was taken up by Niels Bohr as the basis of the first quantum atom model. Thomson's model is popularly referred to as the "plum pudding model" with the notion that the electrons are distributed uniformly, like raisins in a plum pudding.

According to JJ Thomson's model, an atom is a spherical positively charged species in which the negatively charged electrons are randomly placed over the entire sphere just like the dry fruits in a Christmas pudding. That is why he named his model as plum pudding model.

These negatively charged particles that Thomson discovered are now called electrons. In the end, Thomson theorized that the electrons were mixed throughout an atom kind of like chocolate chips in chocolate chip ice cream. He compared the atom to being a soft blob (kind of like ice cream) with chips floating throughout.

Thomson postulated the plum pudding model of the atom, in which negatively charged electrons were contained within a positively charged soup.

This led him to suggest the plum pudding model. of the atom. In this model, the atom is a ball of positive charge with negative electrons embedded in it - like currants in a Christmas pudding.

The plum pudding model

After discovering the electron in 1897, J J Thomson proposed that the atom looked like a plum pudding close plum pudding modelThe scientific idea that an atom is a sphere of positive charge, with negatively charged electrons in it..

What did William Thomson's plum pudding model of the atom suggest? ›

Though several alternative models were advanced in the 1900s by Kelvin and others, Thomson held that atoms are uniform spheres of positively charged matter in which electrons are embedded.

According to the postulates of Thomson's atomic model, an atom resembles a sphere of positive charge with electrons (negatively charged particles) present inside the sphere. The positive and negative charge is equal in magnitude and therefore an atom has no charge as a whole and is electrically neutral.

The plum pudding model suggested that the atom was a ball of positive charge with electrons embedded in it.

Though defunct by modern standards, the Plum Pudding Model represents an important step in the development of atomic theory. Not only did it incorporate new discoveries, such as the existence of the electron, it also introduced the notion of the atom as a non-inert, divisible mass.

Thomson suggested the atom's plum pudding model, which had negatively charged electrons trapped in a "soup" filled with positive effects. Thomson was "wrong" because he assumed that the positive charge of an atom was all one uniform blob of matter with the electrons moving in orbits inside the nucleus.

William Thomson proposed an atomic model in which the interior of the atom was uniformly positively charged with negatively charged electrons spread throughout it. This came to be called the plum pudding model and it was also supported by JJ Thompson.

Rutherford's atomic model became known as the nuclear model. In the nuclear atom, the protons and neutrons, which comprise nearly all of the mass of the atom, are located in the nucleus at the center of the atom. The electrons are distributed around the nucleus and occupy most of the volume of the atom.

Nearly 100 years later, J J Thomson carried out experiments and discovered the electron close electronSubatomic particle, with a negative charge and a negligible mass relative to protons and neutrons.. This led him to suggest the plum pudding model. of the atom.

If the plum pudding model had been correct then all of the fast, highly charged alpha particles would have whizzed straight through undeflected. The scientists were very surprised when other things happened: most of the alpha particles did pass straight through the foil.