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Questions and Answers
What did Bohr suggest about the electrons in his model of the atom?
What did Bohr suggest about the electrons in his model of the atom?
- Electrons are twice the size of protons.
- Electrons have a negative charge but no mass.
- Electrons orbit the nucleus in defined shells. (correct)
- Electrons are randomly scattered within the nucleus.
What is the maximum number of electrons that can occupy the third energy shell in an atom?
What is the maximum number of electrons that can occupy the third energy shell in an atom?
- 18 (correct)
- 8
- 2
- 32
What is the mass number of an atom if it contains 20 protons and 22 neutrons?
What is the mass number of an atom if it contains 20 protons and 22 neutrons?
- 20
- 42 (correct)
- 22
- 40
Which subatomic particle was discovered by James Chadwick?
Which subatomic particle was discovered by James Chadwick?
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What does the atomic number of an element represent?
What does the atomic number of an element represent?
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Which model suggested that atoms are made up of a positively charged nucleus surrounded by electrons in specific energy levels?
Which model suggested that atoms are made up of a positively charged nucleus surrounded by electrons in specific energy levels?
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