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How many electrons does an Oxygen atom need to fulfill the octet rule by filling its valence shell?
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2. Cell Chemistry & Cell Components
Atoms- Smallest Unit of Matter
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Which of the following has negligible mass?
A
Proton
B
Neutron
C
Atom
D
Electron
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Understand the basic structure of an atom, which consists of protons, neutrons, and electrons.
Recall that protons and neutrons are located in the nucleus of an atom and have significant mass.
Recognize that electrons are subatomic particles that orbit the nucleus and have a much smaller mass compared to protons and neutrons.
Note that the mass of an electron is approximately 1/1836 of the mass of a proton, making it negligible in comparison.
Conclude that among the given options, the electron is the subatomic particle with negligible mass.
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