1.Ā What is wrong with the notation 1s22s22p63s23p63d104s24p2 for germanium (atomic number 32)?
a.Ā The 4sĀ subshell should appear before the 3dĀ subshell.
b.Ā The 3pĀ subshell should have more than 6 electrons.
c.Ā The 3dĀ subshell can hold only 8 electrons.
d.Ā The 4dĀ subshell should receive electrons before the 4pĀ subshell.
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2.Ā Why should the 4sĀ subshell be filled before the 3d?
a.Ā The 4sĀ subshell has greater spherical symmetry than the 3dĀ subshell.
b.Ā The 4sĀ subshell is farther from the nucleus than the 3dĀ subshell.
c.Ā The 4sĀ subshell is at lower energy than the 3dĀ subshell.
d.Ā The 4sĀ subshell holds fewer electrons than the 3dĀ subshell.
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3.Ā Write the electron configuration for the Na+ ion, which has ten electrons.
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4.Ā Write the electron configuration for the Br- ion, which has thirty-six electrons.