Write the atomic symbol for the isotope with each of the following characteristics: a. 15 protons and 16 neutrons b. 35 protons and 45 neutrons c. 50 electrons and 72 neutrons d. a chlorine atom with 18 neutrons e. a mercury atom with 122 neutrons
11 General Biology 101-004 John McDuffie- 2/8/17 Highlight = Example Highlight = Important Concept Highlight = Key Term - Periodic properties are predictable based on an element’s position within the perio dic table. Periodic properties include atomic radius, ionization energy, electron affinity, density, and metallic character. - The elements are listed in order of increasing atomic number rather than increasirelative mass as they were in Mendeleev’s periodic table. - Rows of the table are referred to as periods. - Columns in the table are referred to as groups or a family. - Elements in a group or family have similar properties.
