The atomic radius for an element can take different values, depend by radius. (I

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The atomic radius for an element can take different values, depend 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 orbit of a hydrogen atom can be calculated using the following formula: Calculate the mean radius of a 2s orbital. The radius of the 90% boundary surface and the most probable radius of the 2s orbital also be determined. One of them equals 1.8 A degree and the other equals 4.8 A degree. Which value 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, depend by radius. (I

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