Structure of the Atom

Atomic Structure

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Atomic Structure

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​In 1897, J.J. Thomson discovered the electron.

Multiple Choice

who discovered the electron

• Dalton

• J.J Thomson

• Lavoisier

• Rutherford

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copy the atomic number NOT THE TABLE.

Multiple Choice

What is the charge of a proton?

• Negative

• Positive

• Neutral

Multiple Choice

What particle number is equal to the atomic number Z

• Protons

• Electrons

• Neutrons

Multiple Choice

What is the charge of a neutron?

• Negative

• Positive

• Neutral

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Open Ended

What are the particles circulating around the Nucleus

Poll

Why the "Atomic Mass: in the periodic Table is different than the "Mass Number" of an Atom ?

• It is the average mass of all the isotopes

• Because atoms can have different masses

• I have no Idea

• All answers are correct