Academic Chemistry Class Notes April 9, 2015 Periodic Trends of the Elements.

Slides:



Advertisements
Similar presentations
Periodic Trends You will know what ionization energy is and how it trends on the periodic table You will know what electron affinity and electronegativity.
Advertisements

Periodic Trends.
Electronegativity A measure of the ability of an atom that is bonded to another atom to attract electrons to itself. Trend: Increases from left to right.
Trends in the Periodic Table
Periodic Trends Mrs. Coyle Chemistry.
Periodic Trends.
The Periodic Law Electron Configuration and Periodic Properties.
AP Chemistry Chapter 6 Notes. Periodic Law – properties of the elements are a periodic function of their atomic number The moon’s phases and magazine.
Electron Configuration and Periodic Properties
Trends and Similarities
Periodic Table Trends.
After today, you will be able to… Explain the periodic trend for ionic size and electronegativity Compare the size of cations to the size of anions.
WHAT ARE THE PERIODIC TRENDS?. Periodic Trends All information in contained in table S Predictable properties/changes that occur as we move down groups.
Periodic Trends You will know what ionization energy is and how it trends on the periodic table You will know what electron affinity and electronegativity.
1 Periodic Trends. 2 Early Design Changes developed by Dmitri Mendeleev in the mid- 1800s –Organized elements by mass into rows and columns –Found elements.
Mendeleev Made periodic table based on atomic mass and other properties. (especially chemical) Had blank spots for undiscovered elements Called periodic.
Chemical Periodicity Ch. 14.
Even More About the Periodic Table
Ch-6 sec-3. Atomic Size Atomic Size is measured as half the distance between two nuclei Size generally decreases with atomic number within a period Size.
Chemistry Chapter 6/7 Notes #3.
Periodicity Periodic Table Trends. Describing the Periodic Table periodic law: the properties of elements repeat every so often period: group (family):
Periodic Trends.
Periodic Trends.
Periodic Trends. Nuclear Charge Shielding Atomic Radius.
Periodic Table Trends. Atomic Radius As you move down a group, atomic radius increases The number of energy levels increases as you move down a group.
Periodic Trends.
AP Chemistry Chapter 6 Notes. Periodic Law – properties of the elements are a periodic function of their atomic number The moon’s phases and magazine.
Periodic Trends. Periodic Properties of the Elements Sizes of Atoms Difficult to define atomic radii for single atoms because the outside of the electron.
 Size is expressed in terms of atomic radius.  Atomic radius is ½ the distance between the nuclei of two atoms of the same element when the atoms are.
Slide 1 of 31 © Copyright Pearson Prentice Hall Periodic Trends > Trends in Atomic Size The atomic radius is one half of the distance between the nuclei.
III. Periodic Trends. Types of Periodic Trends Atomic size (atomic radius) Ionic size (ionic radius) Ionization energy electronegativity.
Atomic Size The atomic radius is one half of the distance between the nuclei of two atoms of the same element when the atoms are joined.
The Diatomics They are elements that are found as two atoms bonded to themselves. They are H 2, N 2, O 2, F 2, Cl 2, Br 2, I 2 There are 7 of them and.
Module 3.03 Periodic Trends.
Periodic Trend Nuclear charge atomic size or radius ionization energy electron affinity electronegativity metallic character Reactivity bonding characteristics.
Periodic Trends Periodic Table is arranged by: Atomic number Groups
Periodic Trends Chapter 6 Section 3. Atomic radius Electron clouds do not have clearly defined edges. Electron clouds do not have clearly defined edges.
Periodic Trends. Atomic Radius Defined as half the distance between the nuclei of two atoms Going across the periodic table ◦ But why are they smaller.
Periodicity: The arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group.
Trends in the Periodic Table
Periodic Trends Chemistry 5(C). Learning objectives Use the periodic table to identify and explain trends in – Atomic and ionic radii – Electronegativity.
Line Spectra!. Periodic Trends Atomic Size/Atomic Radius.
I II III Periodic Trends. Valence Electrons  Electrons available to be lost, gained, or shared in the formation of chemical compounds  Outer energy.
PERIODIC TRENDS Atomic size Ionization energy. Atomic Size For the main group elements (s & p blocks), atomic radii increase going down a group and decrease.
Periodic Trends. Chemical Periodicity Atoms participate in chemical reactions in order to fill their outermost s and p sublevels.
Matter Trends and Chemical Bonding Expectations: B2.2, B Periodic Trends and Atomic Properties.
 Bond radius  Ionization Energy  Electronegativity  Electron Affinity*
8 Periodic Table COURSE NAME: CHEMISTRY 101 COURSE CODE:
Chemistry Chapter 5 Section 3.  Atomic Radius  Definition: ½ distance between center of adjacent nuclei of bonded atoms  Trends: p141  Within group,
Christopher G. Hamaker, Illinois State University, Normal IL © 2008, Prentice Hall Chapter 10b Periodic Trends INTRODUCTORY CHEMISTRY INTRODUCTORY CHEMISTRY.
Periodic Trends The chemical and physical properties of elements are a periodic function of atomic number Recall that the number of electrons is equal.
Atomic Size. The atomic radius increases from top to bottom in a group in the periodic table.
Periodic Trends. Types of Periodic Trends How elements differ as you move through the periodic table? Atomic Radius Ionic Radius Ionization Energy Electronegativity.
Periodic Trends. Atomic Radius Half of the distance between two bonding atoms nuclei.
Lesson outline Atomic size (radius) trends Ionization energy trends Ions Ions Electron affinity and electronegativity activity Electron affinity trends.
Slide 1 of 31 Periodic Trends 6.3. © Copyright Pearson Prentice Hall Slide 2 of 31 Periodic Trends Sodium chloride (table salt) produced the geometric.
Atomic Theory & Periodic Table Unit 3 Part 4 (Ch. 6) Trends in Periodic Table.
Shielding Effect The shielding effect is the reduction of attractive force between the nucleus (+) and its outer electrons (-) due to the blocking affect.
Periodic Trends.
Chapter 6 Section 3: Periodic Trends
The Periodic Table Periodic Trends.
Periodic Trends.
Chapter 6 Section 3 Periodic Trends.
Periodic Trends.
Atomic Radii Ionic Radii Ionization Energies Electronegativity
Periodic Trends.
PERIODIC TRENDS.
Periodic Trends.
Periodic Trends.
Atomic Radii Ionic Radii Ionization Energies Electronegativity
Presentation transcript:

Academic Chemistry Class Notes April 9, 2015 Periodic Trends of the Elements

Atomic Radius - the size of an atom. Increases to the left and down on the periodic table.

Electron levels are added as you go down a group. (atomic size increases)

The nuclear charge increases as you go across a period toward the right. (atomic size decreases)

Ionic Radius The negative ion (anion) is always larger than the neutral atom.

The positive ion (cation) is always smaller than the neutral atom.

Electronegativity - the force of attraction an atom has for the electrons shared in a chemical bond

Ionization Energy - the energy required to remove the first electron from a neutral gaseous atom.

The radioactive elements in any group are generally found at the bottom of the periodic table.