Which of the following correctly identifies an exception to the order of the periodic table?
A.) Hydrogen is the only Noble Gas found in Group 1
B.) Cobalt is located before Nickel even though it has a higher average atomic mass.
C.) Boron has 8 protons even though its atomic number is 5
D.) Bromine is the only noble gas not found in group 18
Answers: 2
Chemistry, 22.06.2019 18:20
Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements
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Chemistry, 22.06.2019 19:00
What information does a complete ionic equation give that the balanced equation doesn’t show?
Answers: 1
Chemistry, 22.06.2019 21:40
Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.
Answers: 2
Which of the following correctly identifies an exception to the order of the periodic table?
A.) Hy...
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