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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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cynthiaa cynthiaa
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7 years ago
When an unstable nucleus expels a positron ________.
A) its mass number is decreased by four units
B) its atomic number is decreased by one unit
C) its atomic number is increased by one unit
D) its mass number is decreased by one unit
Textbook 
Introductory Chemistry: Atoms First

Introductory Chemistry: Atoms First


Edition: 5th
Authors:
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maticsmatics
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7 years ago
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cynthiaa Author
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7 years ago
Thanks
Lourd Jenkins
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Yesterday
Thank you, thank you, thank you!
vernonb
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Thanks
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