For an icosahedral cluster calculate the number of atoms present in its 7th shell. Find the total number of atoms in this cluster and its surface to bulk atom ratio.
In an icosahedral cluster, the number of atoms in the nth shell can be calculated using the formula: [ N_n = 10n^2 + 2 ] However, this formula gives the total number of atoms in the complete cluster up to the nth shell. To find the number ______ ________ ___ ________ ____ _______ ________ _____ ____.
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