Problem 93
Bromine has only two natural isotopes, and they occur in about equal abundance. If \(79 \mathrm{Br}\) is one of the isotopes, what is the other isotope given the atomic mass of bromine is approximately 80 amu?
Problem 94
Silver has only two natural isotopes, and they occur in about equal abundance. If \(109 \mathrm{Ag}\) is one of the isotopes, what is the other isotope given the atomic mass of silver is approximately 108 amu?
Problem 95
Explain why the electron configuration for copper is \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1} 3 d^{10}\) rather than the predicted \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{9}\).
Problem 96
Explain why the electron configuration for silver is \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{6} 5 s^{1} 4 d^{10}\) rather than the predicted \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{6} 5 s^{2} 4 d^{9}\).
Problem 97
Which element is responsible for the color of rose gold?
Problem 98
Which element gives rise to the expression "acid test?"
Problem 99
Describe the glow from hydrogen in the plasma state.
Problem 100
Describe the color of oxygen in the liquid state.
