Question
The fourth-period element with the largest atom is (a) $\mathrm{K} ;$ (b) $\mathrm{Br} ;$ (c) $\mathrm{Pb} ;$ (d) $\mathrm{Kr}$.
Step 1
First, let's determine the atomic number of each element in the fourth period: (a) K (Potassium) - Atomic number 19 (b) Br (Bromine) - Atomic number 35 (c) Pb (Lead) - Atomic number 82 (d) Kr (Krypton) - Atomic number 36 Show more…
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