An iodine atom is larger than both a krypton atom and a tellurium atom.

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An iodine atom is larger than a krypton atom because it is in the same group but a period lower, indicating more electron shells and thus a larger size. However, it is smaller than a tellurium atom, which, despite being in the same period, has one less electron shell but more protons, leading to a smaller size due to increased nuclear charge pulling electrons closer.

An Iodine Atom Is Larger Than Both a Krypton Atom