Question
Arrange these elements in order of decreasing atomic radius:$\mathrm{Cs}, \mathrm{Sb}, \mathrm{S}, \mathrm{Pb}, \mathrm{Se}$
Step 1
This is because as you move down a group, the number of electron shells increases, making the atom larger. As you move across a period, the number of protons increases, causing a stronger attraction between the protons and electrons, which pulls the electrons Show more…
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