Multiple Choice
In a simplified model of the atom, which subatomic particle is typically described as moving the fastest?
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4. Atoms and Elements
Subatomic Particles (Simplified)
Multiple Choice
In a simplified model of subatomic particles, what is the relative mass of an electron compared with a proton (proton )?
A
Approximately (about twice the mass of a proton)
B
Approximately (no mass)
C
Approximately (about the same as a proton)
D
Approximately
Verified step by step guidance1
Understand that the problem asks for the relative mass of an electron compared to a proton, where the proton's mass is taken as 1 unit.
Recall that the proton is much heavier than the electron; the electron's mass is significantly smaller than that of the proton.
Express the relative mass of the electron as a fraction of the proton's mass, which is commonly known to be about 1/1836.
Write the relative mass of the electron compared to the proton as \(\frac{1}{1836}\), indicating the electron's mass is approximately 1/1836 times that of the proton.
Conclude that the electron's mass is not zero, not equal to the proton's mass, and certainly not twice the proton's mass, but rather about 1/1836 of it.
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