11.34 Ionization energy is the energy required to re- move a ground state (n 1) electron from an atom. It is usually expressed in units of kJ mol-1. (a) Calculate the ionization energy for the hydrogen atom. (b) Repeat the calculation, assuming in this case the electron is removed from the n 2 state. 11.35 Plasma is a state of matter consisting of positive gaseous ions and electrons. In the plasma state, a mer- cury atom could be stripped of its 80 electrons and therefore would exist as Hg80+, Calculate the energy required for the last ionization step-that is, 80+ (+ e 11.36 A technique called photoelectron spectroscopy is used to measure the ionization energy of atoms. A sam- ple is irradiated with UV light, which causes electrons to be ejected from the valence shell. The kinetic energies of the ejected electrons are measured. Knowing the en- ergy of the UV photon and the kinetic energy of the ejected electron, we can write

7:51 Question 22 of 25 Submit What type of interaction holds a-helices and B-pleated sheets together? A) dispersion forces B) hydrogen bonds C) ion-dipole interactions D) disulfide bonds E) London forces

1 3 6. 7 8. 9. 10 Decide which intermolecular forces act between the molecules of each compound in the table below. intermolecular forces (check all that apply) compound dispersion dipole hydrogen-bonding silicon tetrafluoride NOCI nitrosyl chloride H2 hydrogen water Continue | Privac O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use II 0

(12.3) Identify the molecules that cannot form hydrogen bonding between molecules. O CH3CH₂CH₂OH H₂CO D CH3CH2NH2 O CH3F