6. Below is a Patterson map composed of identical atoms in a plane. Each contour represents the intensity of each peak. (a) how many atoms are present? (b) draw the structure of the collection of atoms in one quadrant. Use arrows to indicate each interatomic vector. (hint: CHEM 467 Winter 2016 Final Name: not all atoms have the same electron density) (c) how many contours should the origin have, and what are they due to? о Suppose that this collection of atoms were symmetrically related to similar sets of atoms via a four-fold rotational axis. Draw the arrangements of the atoms and draw the Patterson map for this complete arrangement. Calculate the number of cross peaks.

Q1. This question is about atomic structure. (a) Write the full electron configuration for each of the following species. CH Fe2+ (b) Write an equation, including state symbols, to represent the process that occurs when the third ionisation energy of manganese is measured. (c) State which of the elements magnesium and aluminium has the lower first ionisation energy Explain your answer. (d) A sample of nickel was analysed in a time of flight (TOF) mass spectrometer. The sample was ionised by electron impact ionisation. The spectrum produced showed three peaks with abundances as set out in the table. m/z Abundance /% 58 61.0 60 29.1 61 9.9 Give the symbol, including mass number, of the ion that would reach the detector first in the sample. Calculate the relative atomic mass of the nickel in the sample. Give your answer to one decimal place. Page 2 of 12 Symbol of ion Relative atomic mass

(1) What is the valence electron configuration for the arsenic atom? (2) What is the valence electron configuration for the fluorine atom?

Select the ions or atoms from the following sets that are isoelectronic with each other. (a) (b) (c) Fe²+ Cu³+ Ni2+ AP+ p.J. Na+ DRb (d) Br Cs' 82. mut Na

choose three . What are the characteristerses of a metal like element? (a) they try to get additional electrons (b) they are melleable. (c) they are lightly to give away or share electrons. (d) they are good conductors of electricity

Identify the shell, subshell, and number of electrons for the following: (a)2p3 . (b) 4d9 . (c) 3s1 . (d) 5g16 .

The electron in the hydrogen atom (in its ground state) orbits the nucleus at a distance of 0.5292 Å. (a) Calculate the gravitational force and (b) the electrostatic force of attraction between the two. (c) Comment on the magnitude and the importance of these two forces. [G, gravitational constant = 6.672 x 10-11 N m2 kg-2; 4+Єo = 1.113 x 10-10 C2 m-1 J-1]

Answer the following questions for the element Nh (Z = 113). Where prompted, type answers in the provided blanks. Write out all your work (A) The name of the element = type your answer... (B) What is the full electron configuration for an atom of Nh? (C) What is the electron configuration for Nh using the noble gas notation? (D) The number of valence electrons in an atom of Nh= type your answer... (E) Give the full set of quantum numbers for each of the valence electrons of Nh. Use the format: (n, I, m₁, mç)

(a) Identify the number of electrons in the ground-state outer shell of atomic oxygen (atomic number 8).(b) How many electrons are in the ground-state outer shell of fluorine?

10. Use electron configurations to explain (a) why arsenic can acquire charges of-3 and +3 but not +2 (b) the +2 charge on the lead(II) ion (c) the +1 charge of the silver ion m