The diagram shows four different locations in an atom. 2
Nucleus
3
7
4
Which locations are likely to have subatomic particles with the LEAST mass? (3 points)
a
1 and 2
b
2 and 3
с
1 and 4
Od
3 and 4

The locations with subatomic particles with the least mass are locations 1 and 4.

An atom is usually divided into two main regions:

The three sub-particles previously mentioned (neutrons, protons, and electrons) differ not only in their location but also in their mass. Indeed, electrons have a lower mass if compared to neutrons and protons.

Based on this, the outer region (locations 1 and 4) has sub particles with the least mass.

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