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Questions and Answers
What is the central part of an atom that contains protons and neutrons?
What is the central part of an atom that contains protons and neutrons?
- Electron cloud
- Nucleus (correct)
- Atomic orbitals
- Valence shell
Which model of the atom proposed the existence of negatively charged particles (electrons) embedded in a positively charged sphere?
Which model of the atom proposed the existence of negatively charged particles (electrons) embedded in a positively charged sphere?
- Rutherford model
- Bohr model
- Plum pudding model (correct)
- Thomson model
Which term refers to atoms of the same element that have the same number of protons but different numbers of neutrons?
Which term refers to atoms of the same element that have the same number of protons but different numbers of neutrons?
- Atomic mass
- Isotopes (correct)
- Valency
- Isobars
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Study Notes
Atomic Structure
- The central part of an atom that contains protons and neutrons is the nucleus.
Atomic Model
- The Plum Pudding Model proposed the existence of negatively charged particles (electrons) embedded in a positively charged sphere.
Atomic Variations
- Atoms of the same element that have the same number of protons but different numbers of neutrons are referred to as isotopes.
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