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6High Demand Questions QUESTIONSHEET 1 Look at the following section of the periodic table. 1 2 3 4 5 0 6 7 He H Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr…

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positive 1 (+1) positive 2 (+2) positive 3 (+3) hydrogen H+1 calcium Ca+2 aluminium Al+3 sodium Na+1 magnesium Mg+2 iron III Fe+3 potassium K+1 barium Ba+2 chromium III Cr+3…

International Journal of Advanced Scientific and Technical Research Issue 4 volume 4, July-August 2014 Available online on http://www.rspublication.com/ijst/index.html ISSN…