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5 December, 12:23

O átomo de Rutherford (1911) foi comparado ao sistema planetário (o núcleo atômico representa o sol e a elestrosfera, os planetas). A Eletrosfera é a região do átomo que:

a) Contém as partículas de carga elétrica negativa.

b) Contém as partículas de carga elétrica positiva.

c) Contém nêutrons.

d) Contém prótons e nêutrons.

e) Contém prótons e elétrons.

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  1. 5 December, 13:38
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    a) Contains the negatively charged particles.

    Explanation:

    The Rutherford model of the atom consisted of a dense, positively charged nucleus surrounded by orbiting electrons. In a planetary model, the electrosphere would consist of the electrons.

    b), d). and e) are wrong. The positively charged particles - the protons - were in the nucleus.

    c) is wrong. Neutrons were not discovered until 1932.
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