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% Packages
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%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
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% Document Info
\author{{[}deleted{]}}
\pdfinfo{
  /Title (grade-12-chemistry-course-overview.pdf)
  /Creator (Cheatography)
  /Author ({[}deleted{]})
  /Subject (grade 12 chemistry course overview Cheat Sheet)
}

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% This two commands together give roughly
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% Commands
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% Header and Footer
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\fancyhead{} % Set header to blank
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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{grade 12 chemistry course overview Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{{[}deleted{]}} via \textcolor{DarkBackground}{\uline{cheatography.com/123320/cs/23166/}}}
\end{tabulary}
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\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}{[}deleted{]} \\
  \uline{cheatography.com/deleted-123320} \\
  \end{tabulary}
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\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 10th June, 2020.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
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  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Lewis Dot Diagrams: NASL Method}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{N - calculate needed as the sum of electrons needed for all atoms by the octet rule  Exceptions (H=2, Be=4, B=6)} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{A - calculate available as the sum of all valence electrons} \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{S - calculate shared as the difference between N and A. Divide S by 2 to obtain the number of bonds to be extended from the central atom} \tn 
% Row Count 8 (+ 3)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{L - calculate lone pair of electrons (dots) as the difference between A and S.} \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Formal charge - Count the number of valence electrons the atom has in the molecule (both electrons in any un-bonded pairs and one electron for each bond). Subtract this number from the number of valence electrons from the periodic table} \tn 
% Row Count 15 (+ 5)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Neutralize charges on neighboring atoms by moving unbonded electrons into bonds. Only if the (-) atom has an unbonded pair of electrons and the (+) atom is not completely filled. The exception is that if the (+) atom lies in a row further down on the periodic table than the (-) atom. In that case the charges can be transferred even if it means "overfilling" the atom.} \tn 
% Row Count 23 (+ 8)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.04425 cm} x{1.04425 cm} x{1.04425 cm} x{1.04425 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{Resonance, Bond Order, Bond Length, Bond Energy}}  \tn
% Row 0
\SetRowColor{LightBackground}
Resonance & Bond Order & Bond Energy & Bond Length \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Resonance \seqsplit{structures} have the same relative placement of atoms, but different locations of multiple bonds and lone electron pairs. & The number of electron pairs being shared by any pair of bonded atoms & The energy required to overcome this \seqsplit{attraction} & Distance between two nuclei of two bonded atoms A higher bond order for a given pair of atoms will result in a shorter bond length, and higher bond energy \tn 
% Row Count 18 (+ 16)
% Row 2
\SetRowColor{LightBackground}
Smaller formal charges (+ or -) are preferred over larger ones Like formal charges on adjacent atoms are not \seqsplit{desirable.} A more (-) formal charge should reside on a more \seqsplit{electronegative} atom in a molecule & Single bond - bond order of 1 Double bond- bond order of 2 Triple bond - bond order of 3 &  &  \tn 
% Row Count 39 (+ 21)
\hhline{>{\arrayrulecolor{DarkBackground}}----}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}