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Chapter 6: Q55E (page 336)
Question:which atom has the electron configuration 1s22s22p63s23p64s23d104p65s24d2?
The atom is zirconium (Zr).
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Compare both the numbers of protons and electrons present in each to rank the following ions in order of
increasing radius:\({\bf{A}}{{\bf{s}}^{{\bf{3}}--}},{\rm{ }}{\bf{B}}{{\bf{r}}^--},{\rm{ }}{{\bf{K}}^ + },{\rm{ }}{\bf{M}}{{\bf{g}}^{{\bf{2}} + }}\).
Which of the following atoms and ions is (are) isoelectronic with\({{\bf{S}}^{{\bf{2}} + }}:{\rm{ }}{\bf{S}}{{\bf{i}}^{4 + }}{\rm{ ,}}{\bf{C}}{{\bf{l}}^{{\bf{3}} + }},{\rm{ }}{\bf{Ar}},{\rm{ }}{\bf{A}}{{\bf{s}}^{{\bf{3}} + }},{\rm{ }}{\bf{Si}},{\rm{ }}{\bf{A}}{{\bf{l}}^{{\bf{3}} + }}\)?
Question:Read the labels of several commercial products and identify monatomic ions of at least six main groupelements contained in the products. Write the complete electron configurations of these cations and anions.
One of the frequencies used to transmit and receive cellular telephone signals in the United States is 850 MHz. What is the wavelength in meters of these radio waves?
What is the energy in joules and the wavelength in meters of the photon produced when an electron falls from then= 5 to then= 3 level in a\({\bf{H}}{{\bf{e}}^ + }\)ion (\(Z = {\rm{ }}{\bf{2}}\)for\({\bf{H}}{{\bf{e}}^{\bf{ + }}}\))?
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