Problem 83
Designate the orbital that fits each of the following descriptions: (a) a spherical orbital in the fifth energy level (b) a dumbbell-shaped orbital in the fourth energy level
Problem 84
Designate the orbital that fits each of the following descriptions: (a) a spherical orbital in the sixth energy level (b) a dumbbell-shaped orbital in the third energy level
Problem 85
State the maximum number of electrons that can occupy each of the following orbitals: (a) \(1 s\) (b) \(2 p\) (c) \(3 d\) (d) \(4 f\)
Problem 86
State the maximum number of electrons that can occupy each of the following sublevels: (a) \(1 s\) (b) \(2 p\) (c) \(3 d\) (d) \(4 f\)
Problem 87
Silver occurs naturally as \({ }^{107} \mathrm{Ag}\) and \({ }^{109} \mathrm{Ag} .\) Given the mass and abundance of silver-109 \((108.91\) amu and \(48.16 \%)\), what is the isotopic mass of silver-107?
Problem 88
Gallium occurs naturally as \({ }^{69} \mathrm{Ga}\) and \({ }^{71} \mathrm{Ga}\). Given the mass and abundance of gallium- \(69(68.92\) amu and \(60.10 \%)\), what is the isotopic mass of gallium-71?
Problem 89
Element 43 is used in medical radiology to locate tumors. Refer to the periodic table and state whether Tc has any stable isotopes.
Problem 90
Element 61 was named for the mythological Greek Prometheus who stole fire from the gods. Refer to the periodic table and state whether \(\mathrm{Pm}\) has any stable isotopes.
Problem 91
Indicate the region of the spectrum for each of the following wavelengths of light. (a) \(280 \mathrm{nm}\) (b) \(1200 \mathrm{nm}\)
Problem 92
Indicate the region of the spectrum for each of the following wavelengths of light. (a) \(320 \mathrm{nm}\) (b) \(1500 \mathrm{nm}\)
