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Documents 3. trend across period(1)

1. Identify the position of an element in the periodictable by its electron configurationPeriodic table is divided into several blocks 2. -To identify the block of an element,…

Documents © 2006 Thomson-Brooks Cole Chapter 9 Molluscs, Arthropods, Lophophorates, Echinoderms, and...

Chapter 9 Molluscs, Arthropods, Lophophorates, Echinoderms, and Invertebrate Chordates Molluscs Phylum Mollusca Have soft bodies, usually covered by a calcium carbonate shell…