Why do elements in the same column of the Periodic Table share similar properties?

• Due to having the same number of protons

• Due to having the same number of neutrons

• Due to having the same number of electrons

• Due to having the same number of valence electrons

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How does understanding atoms and the Periodic Table help in predicting element behavior and creating new compounds in chemistry?

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What are the basic building blocks of matter?

• Protons

• Neutrons

• Electrons

• Molecules

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How are elements organized in the Periodic Table?

• Based on their atomic weight

• Based on their color

• Based on their atomic structure

• Based on their melting point

Valence electrons determine how elements will react with each other.