Periodic Trends in Chemistry

MALINAO NATIONAL HIGH SCHOOL GENERAL CHEMISTRY 1 CHRISTIAN QUEZADA CAR PERIODIC TRENDS Periodicity PERIODIC TRENDS observable patterns in the properties of an element that are dependent on its position in the Periodic Table. Periodicity ATOMIC PROP...

MALINAO NATIONAL HIGH SCHOOL GENERAL CHEMISTRY 1 CHRISTIAN QUEZADA CAR PERIODIC TRENDS Periodicity PERIODIC TRENDS observable patterns in the properties of an element that are dependent on its position in the Periodic Table. Periodicity ATOMIC PROPERTIES E L E C T RONE GA T I V I T Y 5 12 5 3 22 20 17 14 5 7 1 22 9 24 9 22 27 measure of attraction an atom has for bonding electrons or how badly the atom wants another electron. ATOMIC PROPERTIES E L E C T RON A F F I N I T Y 5 12 5 3 22 20 17 14 2 6 6 9 14 9 22 27 ability of an atom to accept an electron. This is a quantitative measurement of the energy change occurring when an electron is added to a neutral gas atom. ATOMIC PROPERTIES I ON I Z A T I ON ENE RGY 9 17 14 9 28 1 22 9 17 14 5 14 5 20 7 27 amount of energy needed to pull an electron away from the atom in the gaseous state, or the tendency of an atom to give up electrons. This is conceptually the opposite of electron affinity. ATOMIC PROPERTIES A T OM I C RAD I US 1 22 17 13 9 3 20 1 4 9 23 21 one-half the distance between the nuclei of two atoms of the same element. ATOMIC PROPERTIES ME T A L L I C P ROP E R T Y 13 5 22 22 1 12 9 3 18 20 17 18 5 20 22 27 Metallic character is a set of physical and chemical properties including reactivity, conductance, ductility, and malleability. One important characteristic is how readily an atom can lose an electron. THE PERIODIC TRENDS Periodicity of the Elements ATOMIC RADIUS / METTALIC PROPERTY ATOMIC RADIUS / METTALIC PROPERTY INCREASES ELECTRONEGATIVITY / ELECTRO AFFINITY / IONIZATION ENERGY INCREASES INCREASES ELECTRONEGATIVITY / ELECTRO AFFINITY / IONIZATION ENERGY INCREASES