A common debate amongst chemists is the placement of the hydrogen (H) element in the modern periodic table. Some argue it is in the right place, in group 1 above lithiumn (LI). Others argue it would be better placed in group 7, above fluorine (F) and next to helium (He). b. Write one argument to support hydrogen's placement in group 1. (Another way to ask this question is why is hydrogen placed in group 17) does hydrogen have in common with other group 7 elements?) Write one argument to support placing hydrogen in group 7. (Another way to ask this question is what 18. Consider an imaginary element, a transition metal called pikulium, Pi. a. For the compound PiS2 C i. What is the charge (give both the sign and numeric value of the charge) on the Pi ion in the compound? ii. Write the name of the compound: b. For the compound Piz(PO4)2 1. Identify the cation and the charge of the cation: ii. Identify the anion and the charge of the anion

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