The Atomic Radius of Main-Group Elements Generally Increases Down a Group

question 105

Multiple Choice

The atomic radius of main-group elements generally increases down a group because ________.

• A)effective nuclear charge increases down a group
• B)effective nuclear charge decreases down a group
• C)effective nuclear charge zigzags down a group
• D)the principal quantum number of the valence orbitals increases
• E)both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases

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