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%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
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% Document Info
\author{Ayesha Talib}
\pdfinfo{
  /Title (structure-of-an-atom.pdf)
  /Creator (Cheatography)
  /Author (Ayesha Talib)
  /Subject (Structure of an Atom Cheat Sheet)
}

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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    \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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\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Structure of an Atom Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Ayesha Talib} via \textcolor{DarkBackground}{\uline{cheatography.com/173447/cs/36721/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Ayesha Talib \\
  \uline{cheatography.com/ayesha-talib} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 26th January, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
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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}
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% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{1.8 cm} x{1.872 cm} x{1.872 cm} x{1.656 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{4}{x{8.4cm}}{\bf\textcolor{white}{CHARACTERISTICS OF SUB-ATOMIC PARTICLEES}}  \tn
% Row 0
\SetRowColor{LightBackground}
PROPERTY & ELECTRON & PROTON & NEUTRON \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
DISCOVERY & JJ Thomson & E Goldstein & Chadwick \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
ABSOLUTE MASS & 9×10\textasciicircum{}-31\textasciicircum{}kg & 1.6×10\textasciicircum{}-27\textasciicircum{}kg & 1.6×10\textasciicircum{}-27\textasciicircum{}kg \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
RELATIVE MASS & 1/1840u & 1u & 1u \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
CHARGE & negative & positive & no charge \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
ABSOLUTE CHARGE & -1.6×10 \textasciicircum{}−19\textasciicircum{} & +1.6×10 \textasciicircum{}−19\textasciicircum{} & 0 \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
LOCATION & outside nucleus & inside nucleus & inside nucleus \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}----}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{THOMSON'S MODEL}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{limitations of JJ's model of an atom?} \tn 
\mymulticolumn{1}{x{8.4cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}couldn't explain stability of an atom, neutron \& nucleus. acc. to him, mass of atom was uniformly distributed but mass is concentrated in the nucleus. results of experiments by scientists couldn't be explained by this model.} \tn 
% Row Count 6 (+ 6)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{explain his model.} \tn 
\mymulticolumn{1}{x{8.4cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}an atom consists of a +vely charged sphere and e\textasciicircum{}-\textasciicircum{} are embedded in it. -ve \& +ve charges are equal in magnitude, so the atom is electrically neutral.} \tn 
% Row Count 11 (+ 5)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{RUTHERFORD'S MODEL}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{any particle in a circular orbit would undergo acc.. during accn, charged particles would radiate energy. thus, revolving electrons would lose energy and fall into the nucleus. thus the atoms would be highly unstable but they're not.% Row Count 5 (+ 5)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{radius of nucleus is about 10\textasciicircum{}5\textasciicircum{} times less than the radius of the atom.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{BOHR'S MODEL}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{only certain special orbits known as discrete orbits of e\textasciicircum{}-\textasciicircum{}, are allowed inside atom. while revolving, e\textasciicircum{}-\textasciicircum{} don't radiate energy. these energy shells are represented by letters K,L,M,N.. or numbers n=1,2,3,4..% Row Count 5 (+ 5)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
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\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{ATOMIC \& MASS NUMBER}}  \tn
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\mymulticolumn{1}{x{8.4cm}}{{\bf{atomic number}} = total N\textasciicircum{}p\textasciicircum{} OR N\textasciicircum{}e\textasciicircum{}  \newline % Row Count 1 (+ 1)
ex; Na: 11, N\textasciicircum{}p\textasciicircum{} OR N\textasciicircum{}e\textasciicircum{} = 11 \newline % Row Count 2 (+ 1)
{\bf{mass number}} = N\textasciicircum{}p\textasciicircum{}+N\textasciicircum{}n\textasciicircum{} {[}neuclons{]} \newline % Row Count 3 (+ 1)
{\bf{average atomic mass}} = mass no.×percentage+mass no.×percentage% Row Count 5 (+ 2)
} \tn 
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
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\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{ISOTOPES /\textbackslash{} ISOBARS}}  \tn
% Row 0
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atoms of the same element having same atomic numbers but different mass numbers & atoms of different elements with different atomic numbers but same mass numbers \tn 
% Row Count 4 (+ 4)
% Row 1
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have same chemical properties but different physical properties & have different chemical properties but same physical properties \tn 
% Row Count 8 (+ 4)
% Row 2
\SetRowColor{LightBackground}
ex; \textasciicircum{}12\textasciicircum{}`6`C \textasciicircum{}14\textasciicircum{}`6`C & ex; \textasciicircum{}40\textasciicircum{}`20`Co \textasciicircum{}40\textasciicircum{}`18`Ar \tn 
% Row Count 10 (+ 2)
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\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{isotope of: uranium- fuel in nuclear reactors; cobalt- treatment of cancer; iodine- treatment of goitre.}  \tn 
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\par\addvspace{1.3em}

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\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{ELEMENTS \& NEUTRONS}}  \tn
% Row 0
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1. H: 0 & 7. N: 7 & 13. Al: 14 \tn 
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2. He: 2 & 8. O: 8 & 14. Si: 14 \tn 
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3. Li: 4 & 9. F: 10 & 15. P: 16 \tn 
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4. Be: 5 & 10. Ne: 10 & 16. S: 16 \tn 
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5. B: 6 & 11. Na: 12 & 17. Cl: 18 \tn 
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6. C: 6 & 12. Mg: 12 & 18. Ar: 22 \tn 
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\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{SYMBOLS OF IONS}}  \tn
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Sodium & Na\textasciicircum{}+\textasciicircum{} \tn 
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Potassium & K\textasciicircum{}+\textasciicircum{} \tn 
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Silver & Ag\textasciicircum{}+\textasciicircum{} \tn 
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Copper {[}I{]} & Cu\textasciicircum{}+\textasciicircum{} \tn 
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Magnesium & Mg\textasciicircum{}2+\textasciicircum{} \tn 
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Calcium & Ca\textasciicircum{}2+\textasciicircum{} \tn 
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Zinc & Zn\textasciicircum{}2+\textasciicircum{} \tn 
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Iron {[}II{]} & Fe\textasciicircum{}2+\textasciicircum{} \tn 
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Copper {[}II{]} & Cu\textasciicircum{}2+\textasciicircum{} \tn 
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Aluminium & Al\textasciicircum{}3+\textasciicircum{} \tn 
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Iron {[}III{]} & Fe\textasciicircum{}3+\textasciicircum{} \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.96 cm} p{3.04 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{SYMBOLS OF IONS {[}non-metallic elements{]}}}  \tn
% Row 0
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Hydrogen & H\textasciicircum{}+\textasciicircum{} \tn 
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% Row 1
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Hydride & H\textasciicircum{}-\textasciicircum{} \tn 
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Chloride & Cl\textasciicircum{}-\textasciicircum{} \tn 
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Bromide & Br\textasciicircum{}-\textasciicircum{} \tn 
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Iodide & I\textasciicircum{}-\textasciicircum{} \tn 
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\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{} \tn 
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\SetRowColor{LightBackground}
Oxide & O\textasciicircum{}2-\textasciicircum{} \tn 
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% Row 7
\SetRowColor{white}
Sulphide & S\textasciicircum{}2-\textasciicircum{} \tn 
% Row Count 7 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{} \tn 
% Row Count 7 (+ 0)
% Row 9
\SetRowColor{white}
Nitride & N\textasciicircum{}3-\textasciicircum{} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{5.36 cm} x{2.64 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{SYMBOLS OF IONS {[}polyatomic ions{]}}}  \tn
% Row 0
\SetRowColor{LightBackground}
Ammonium & NH`4`\textasciicircum{}+\textasciicircum{} \tn 
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% Row 1
\SetRowColor{white}
Hydroxide & OH\textasciicircum{}-\textasciicircum{} \tn 
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\SetRowColor{LightBackground}
Nitrate & NO`3`\textasciicircum{}-\textasciicircum{} \tn 
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Hydrogen Carbonate & HCO`3`\textasciicircum{}-\textasciicircum{} \tn 
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% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{} \tn 
% Row Count 4 (+ 0)
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Carbonate & CO`3`\textasciicircum{}2-\textasciicircum{} \tn 
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% Row 6
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Sulphite & SO`3`\textasciicircum{}2-\textasciicircum{} \tn 
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% Row 7
\SetRowColor{white}
Sulphate & SO`4`\textasciicircum{}2-\textasciicircum{} \tn 
% Row Count 7 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{} \tn 
% Row Count 7 (+ 0)
% Row 9
\SetRowColor{white}
Phosphate & PO`4`\textasciicircum{}3-\textasciicircum{} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}