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Name:__________ Date:_________ Please use the following slides to complete the attached atomic basics worksheet. You may work with one neighbor. Atomic Basics

Atomic number- # of protons and electrons Atomic Symbol Elements are distinguished on the periodic table by the number of protons in their nucleus. Atomic number- # of protons and electrons Atomic Symbol Atomic Mass= # protons + # neutrons Atomic Number Atomic Symbol Atomic Mass

It determines the bonding properties Valance numbers are the number of electrons in the last shell or energy level. It can be determined by looking at which group the element is in. It determines the bonding properties of the atom. What is the significance of the valance number? -