Question

1. The electron in a hydrogen atom is promoted to an orbit with n = 6. What is its new energy? 2. What is the energy in joules and the wavelength in meters of the photon produced when an electron falls from the n = 5 to the n = 3 level in a He$^+$ ion (Z = 2 for He$^+$)? 3. Calculate the wavelength of a softball with a mass of 100 g traveling at a velocity of 35 m s$^{-1}$, assuming that it can be modeled as a single particle. 4. Identify the subshell in which electrons with the following quantum numbers are found: (a) n = 3, l = 1; (b) n = 5, l = 3; (c) n = 2, l = 0. 5. If a shell contains a maximum of 32 electrons, what is the principal quantum number, n? 6. How many orbitals have l = 2 and n = 3? 7. Identify the atoms from the electron configurations given: (a) [Ar]4s$^2$3d$^5$ (b) [Kr]5s$^2$4d$^{10}$5p$^6$ 8. Which ion with a +2 charge has the electron configuration 1s$^2$2s$^2$2p$^6$3s$^2$3p$^6$4s$^2$3d$^{10}$4p$^6$4d$^7$? Which ion with a +3 charge has this configuration? 9. Give an example of an atom whose size is smaller than fluorine. 10. Which has the lowest value for IE: O, Po, Pb, or Ba?

          1. The electron in a hydrogen atom is promoted to an orbit with n = 6. What is its new energy?
2. What is the energy in joules and the wavelength in meters of the photon produced when an electron falls
from the n = 5 to the n = 3 level in a He$^+$ ion (Z = 2 for He$^+$)?
3. Calculate the wavelength of a softball with a mass of 100 g traveling at a velocity of 35 m s$^{-1}$, assuming
that it can be modeled as a single particle.
4. Identify the subshell in which electrons with the following quantum numbers are found: (a) n = 3, l = 1;
(b) n = 5, l = 3; (c) n = 2, l = 0.
5. If a shell contains a maximum of 32 electrons, what is the principal quantum number, n?
6. How many orbitals have l = 2 and n = 3?
7. Identify the atoms from the electron configurations given:
(a) [Ar]4s$^2$3d$^5$
(b) [Kr]5s$^2$4d$^{10}$5p$^6$
8. Which ion with a +2 charge has the electron configuration 1s$^2$2s$^2$2p$^6$3s$^2$3p$^6$4s$^2$3d$^{10}$4p$^6$4d$^7$? Which ion with a +3
charge has this configuration?
9. Give an example of an atom whose size is smaller than fluorine.
10. Which has the lowest value for IE: O, Po, Pb, or Ba?

1. The electron in a hydrogen atom is promoted to an orbit with n = 6. What is its new energy?
2. What is the energy in joules and the wavelength in meters of the photon produced when an electron falls
from the n = 5 to the n = 3 level in a He^+ ion (Z = 2 for He^+)?
3. Calculate the wavelength of a softball with a mass of 100 g traveling at a velocity of 35 m s^-1, assuming
that it can be modeled as a single particle.
4. Identify the subshell in which electrons with the following quantum numbers are found: (a) n = 3, l = 1;
(b) n = 5, l = 3; (c) n = 2, l = 0.
5. If a shell contains a maximum of 32 electrons, what is the principal quantum number, n?
6. How many orbitals have l = 2 and n = 3?
7. Identify the atoms from the electron configurations given:
(a) [Ar]4s^23d^5
(b) [Kr]5s^24d^105p^6
8. Which ion with a +2 charge has the electron configuration 1s^22s^22p^63s^23p^64s^23d^104p^64d^7? Which ion with a +3
charge has this configuration?
9. Give an example of an atom whose size is smaller than fluorine.
10. Which has the lowest value for IE: O, Po, Pb, or Ba?

Added by Jeffrey S.

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