The atomic radius for an element can take different values, depending upon what

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The atomic radius for an element can take different values, depending upon what exactly is meant by radius. (It is also different when an atom is in compounds, where it is often called the covalent radius.) The mean radius of any orbital of a hydrogen atom can be calculated using the following formula: r_n, l = n^2 [1 + 1/2 (1 - 1(l + 1) / n^2)]a_0/Z Calculate the mean radius of a 2s orbital. The radius of the 90% boundary surface and the most probable radius of the 2s orbital can also be determined. One of them equals 1.8 and the other equals 4.8 . Which value is the most probable radius? How do you know? (Looking at figure 13.9 may be helpful.)

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The atomic radius for an element can take different values, depending upon what

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