The plum pudding model of the atom states that1. each atom has an overall negative charge2. each atom has a dense, positively charged center3. an atom is a solid, indivisible sphere that makes up all matter4. an atom is made up of electrons in a sea of positive charges

The correct option is (4).

Explanation:

The Plum Pudding model of the atom was proposed by scientist J.J. Thomson. In which he had explained that atom contains negatively charged sub atomic particles called electrons.Atom is an neutral sphere in which electrons are embedded in sea of positive charges just like plums on the pudding cake.

So, the correct option is (4).

4. an atom is made up of electrons in a sea of positive charges

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