Questions and Answers
What does the atomic number represent?
Number of protons
What does the mass number represent?
Number of protons and neutrons combined
Explain what a group and a period represent on the periodic table.
Period: number of shells; Group: number of electrons in the last shell
How would you figure the number of protons or electrons in an atom?
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What is the charge of a proton?
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Where would you find a proton in an atom?
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Where would you find an electron in an atom?
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What is the charge of a neutron?
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Where would you find a neutron in an atom?
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Study Notes
Atomic Number and Mass Number
- The atomic number indicates the number of protons in an atom.
- The mass number is the total count of protons and neutrons in the nucleus.
Periodic Table Structure
- A period on the periodic table corresponds to the number of electron shells an element has.
- A group indicates the number of electrons in the outermost shell, which influences chemical properties.
Protons and Electrons
- The atomic number is essential for determining the number of protons and, in a neutral atom, the number of electrons.
- Protons carry a positive charge, while electrons carry a negative charge.
Atomic Composition
- Protons are located in the nucleus of an atom.
- Electrons are found in shells surrounding the nucleus.
- Neutrons, which are neutral in charge, are also located in the nucleus.
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Description
Test your knowledge about atomic numbers and the periodic table with these flashcards. Each card provides a question about fundamental concepts such as the representation of protons and neutrons, as well as the arrangement of groups and periods in the periodic table.
