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The elements of the periodic table are arranged in horizontal rows according to each successive element's greater...? 1. atomic mass 2. atomic radius 3. number of protons 4. number of neutrons
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The elements of the periodic table are arranged in horizontal rows according to each successive element's greater...?

1. atomic mass
2. atomic radius
3. number of protons
4. number of neutrons

User Pedram
by
6.7k points

1 Answer

4 votes
3. Number of protons; because with each successive element, their atomic number which is also their proton increases.
User Fernando Madruga
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