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WRITING CHEMICAL EQUATIONS
chymist.comCounting the atoms of each element in the equation it is found that there are 1 atom Al, 7 atoms O, 5 atoms H, and 1 atom S on the left side and 2 atoms Al, 13 atoms O, 2 atoms H, and 3 atoms S on the right side. Al(OH)3 + H2SO4 → Al2(SO4)3 + H2O Left side: Right side: 1 atom Al 2 atoms Al 7 atoms O 13 atoms O
Livingston Public Schools / LPS Homepage
www.livingston.org5. a. What are valence electrons? c. 1s2 2s2 2p6 3s2 3p6 4s2 4p65s2 4d10 5p d. 1s2 2s2 2p6 3s2 3p6 4s2 4p5 Oukx energy elee±rens b. Explain how an atom's valence electron configuration determines its place on the periodic table. k..'ha.+ el.-ant.an¥- c. List the number of valence electrons for the following atoms: potassium = —L magnesium =