[1]
Atkins, P.W. and Jones, L. 2010. Chemical principles: the quest for insight. W. H. Freeman.
[2]
Chang, R. 2016. Chemistry. Mc Graw Hill Education.
[3]
chemguide: helping you to understand Chemistry: http://www.chemguide.co.uk/.
[4]
Housecroft, C.E. and Constable, E.C. 2002. Chemistry: an introduction to organic, inorganic, and physical chemistry. Prentice Hall.
[5]
Interactive 3D Structures: http://www.chemtube3d.com/solidstate/_table.htm.