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Aston Villa play in the city of Birmingham.
If by seven you mean 7A than the answer is both. 17 is the newer system which the scientific community was hoping to establish, which would get rid of the A and B classification. 7A is the older system in which all representative elements are given an A and transition metals are B.
Starting from Group 13 where the red line separates the metals from non-metals, going horizontal, row to row--- Helium Boron Carbon Nitrogen Oxygen Fluorine Neon Silicon Phosphorus Sulfur Chlorine Argon Arsenic Selenium Bromine Krypton Tellurium Iodine Xenon Astatine Radon
the larger the highest energy level number, the larger the atomic radius