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Download Objective 3 Worksheet Bohr Models Name Period In 1943, Niels
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Objective 3 Worksheet Bohr Models Name Period In 1943, Niels Bohr described the atom as a planetary system with electrons orbiting around the nucleus. Bohr’s model is incomplete, but it nonetheless is helpful in understanding why some atoms are very reactive and others are less so. Directions: complete each of the following models using what you know about atoms. The first is completed for you as an example. Atomic # 7__ Atomic Mass 14__ Atomic # ____ Atomic Mass_12_ Atomic # ____ Atomic Mass_40_ Element:_____________ Symbol C_ Valence e#____ Element:_____________ Symbol_____ Valence e#____ Atomic # ____ Atomic Mass_40_ Atomic # ____ Atomic Mass_11_ Atomic # ____ Atomic Mass_27_ Atomic # ____ Atomic Mass_32_ Element:_____________ Symbol_____ Valence e#____ Element:_____________ Symbol _B_ Valence e#____ Element:_____________ Symbol_____ Valence e#____ Element:_____________ Symbol_____ Valence e#____ Atomic # ____ Atomic Mass_37_ Atomic # ____ Atomic Mass_23_ Atomic # _10_ Atomic Mass_20_ Atomic # ____ Atomic Mass____ Element: Sodium Symbol_____ Valence e#____ Element:_____________ Symbol_____ Valence e#____ Element:_____________ Symbol_____ Valence e#____ Isotope Name: Nitrogen Symbol_ N_ Valence e#____ Element:_____________ Symbol_____ Valence e#____ Atomic # ____ Atomic Mass____ Element:_____________ Symbol _H_ Valence e#____ Atomic Structure and Valence Electron Practice The purpose of this assignment is to help you become more familiar with the atomic structure of some common elements by completing the chart below. For each element you have been given enough information to fill all of the blanks. Isotopic Name Element Atomic # Symbol 2 Mass # # Protons Br 12 65 80 Aluminum-27 35 13 U 14 146 11 48 Ag 92 12 Krypton-84 Ca # electrons 4 12 30 # neutrons 40 20 47 61 36 # Valence elec.
