chemistry - Illini West High School
... group trends of several properties. • Relate period and group trends in atomic radii to electron configuration. ...
... group trends of several properties. • Relate period and group trends in atomic radii to electron configuration. ...
Unit 2 Exam Review 2
... A great number of scientists have contributed to the development of the atomic theory. Our currently held theory is open to change as new technologies improve our abilities to make observations and experiment. Identify the scientists who made the following contributions: ______________________= all ...
... A great number of scientists have contributed to the development of the atomic theory. Our currently held theory is open to change as new technologies improve our abilities to make observations and experiment. Identify the scientists who made the following contributions: ______________________= all ...
Inorganic Pharmaceutical Chemistry Atomic Radius
... species form into ionic crystals, in which no ion is specifically paired with any single other ion, in a specific directional bond. Rather, each species of ion is surrounded by ions of the opposite charge, and the spacing between it and each of the oppositely charged ions near it, is the same for al ...
... species form into ionic crystals, in which no ion is specifically paired with any single other ion, in a specific directional bond. Rather, each species of ion is surrounded by ions of the opposite charge, and the spacing between it and each of the oppositely charged ions near it, is the same for al ...
File
... its radius decreases. 2. The Cd atom gains two electrons and its radius increases. 3. The Cd atom loses two electrons and its radius decreases. 4. The Cd atom loses two electrons and its radius increases. ...
... its radius decreases. 2. The Cd atom gains two electrons and its radius increases. 3. The Cd atom loses two electrons and its radius decreases. 4. The Cd atom loses two electrons and its radius increases. ...
Periodic Properties of the Elements
... The softness, low density and low melting points are the result of weaker metallic bonding due to only one valence electron in this group. ...
... The softness, low density and low melting points are the result of weaker metallic bonding due to only one valence electron in this group. ...
Going across a period
... electron from the outside shell. Going down a group, ionization energy decreases because more energy levels are added. This ‘shielding’ causes the electrons to be less attracted to the nucleus little energy is needed to remove them. Going across a period, ionization energy increases because the elec ...
... electron from the outside shell. Going down a group, ionization energy decreases because more energy levels are added. This ‘shielding’ causes the electrons to be less attracted to the nucleus little energy is needed to remove them. Going across a period, ionization energy increases because the elec ...
Periodic Table Notes
... electrons as easily as Groups 1 and 2 Good conductors of heat and electricity Some are used for jewelry The transition metals are able to hold up to 32 electrons in their second to last shell. Can bond with many elements in a variety of shapes. ...
... electrons as easily as Groups 1 and 2 Good conductors of heat and electricity Some are used for jewelry The transition metals are able to hold up to 32 electrons in their second to last shell. Can bond with many elements in a variety of shapes. ...
AtomsFirst2e_day9_sec4.1-4.4_CHMY171_fall_2015
... In a multi-electron atom, electrons are simultaneously attracted to the nucleus and repelled by one another. This results in shielding, where an electron is partially shielded from the positive charge of the nucleus by the other electrons. Although all electrons shield one another to some extent ...
... In a multi-electron atom, electrons are simultaneously attracted to the nucleus and repelled by one another. This results in shielding, where an electron is partially shielded from the positive charge of the nucleus by the other electrons. Although all electrons shield one another to some extent ...
Periodic Table Oakland Schools Chemistry Resource Unit Andrew D. Hulbert
... Transition Metals Occupy the Center of the Periodic Table ...
... Transition Metals Occupy the Center of the Periodic Table ...
1.1 elements and the periodic table
... down a group, whereas nonmetals show a periodic recurrence of increasing melting points as you move down a group. Thus, based on the periodic recurrence of decreasing melting points Li, Na, K, and Rb would be classified as metals. (c) As alkali metals, Li, Na, K, and Rb would be expected to be soft, ...
... down a group, whereas nonmetals show a periodic recurrence of increasing melting points as you move down a group. Thus, based on the periodic recurrence of decreasing melting points Li, Na, K, and Rb would be classified as metals. (c) As alkali metals, Li, Na, K, and Rb would be expected to be soft, ...
File - Mr. Galvin`s Chemistry
... All Halogens are very reactive because they only need 1 extra electron to fill their outer energy level. Trend: The reactivity of the Halogens increases going up the group. Reason: 1. The Halogens are the most electronegative of all elements. The values of their electronegativities increase go ...
... All Halogens are very reactive because they only need 1 extra electron to fill their outer energy level. Trend: The reactivity of the Halogens increases going up the group. Reason: 1. The Halogens are the most electronegative of all elements. The values of their electronegativities increase go ...
Periodic Table
... • Relate period and group trends in atomic radii, ionic radii and electronegativity to electron configuration. • Describe the roles of electron-electron repulsion, electronnucleus attraction, shielding (effective nuclear charge), and the added stability of favored electron configurations (octet, hal ...
... • Relate period and group trends in atomic radii, ionic radii and electronegativity to electron configuration. • Describe the roles of electron-electron repulsion, electronnucleus attraction, shielding (effective nuclear charge), and the added stability of favored electron configurations (octet, hal ...
File
... •Insisted that elements with similar characteristics be groups into families. •He left blanks spaces for unknown elements and predicted their physical properties. •In 1913 Mosley developed the concept of atomic numbers that we use today to classify elements. ...
... •Insisted that elements with similar characteristics be groups into families. •He left blanks spaces for unknown elements and predicted their physical properties. •In 1913 Mosley developed the concept of atomic numbers that we use today to classify elements. ...
printer-friendly version of benchmark
... the group are found to be solid at room temperature and have five electrons in their outer valence levels. Out of all the elements in this group, nitrogen is considered the most important. At room temperature, it is a gas, making up nearly 80 percent of the Earth’s atmosphere. Elements in the oxygen ...
... the group are found to be solid at room temperature and have five electrons in their outer valence levels. Out of all the elements in this group, nitrogen is considered the most important. At room temperature, it is a gas, making up nearly 80 percent of the Earth’s atmosphere. Elements in the oxygen ...
5-3 Electron Configurations and Periodic Properties
... • You’re adding electrons to approximately the SAME region (same “n”) while the electrons are being pulled in more tightly as nuclear ...
... • You’re adding electrons to approximately the SAME region (same “n”) while the electrons are being pulled in more tightly as nuclear ...
printer-friendly version
... Elements in the same column exhibit similar chemical behaviors and reactivities. The columns are called families because of this. Just as the members of human families tend to have some similar behaviors, elements in the same family behave similarly. For example, all group 1A metals react vigorously ...
... Elements in the same column exhibit similar chemical behaviors and reactivities. The columns are called families because of this. Just as the members of human families tend to have some similar behaviors, elements in the same family behave similarly. For example, all group 1A metals react vigorously ...
Metal found in the salt
... The Rutherford gold foil experiment is one of the most famous of all time. More than 25 years after conducting the experiment, Ernest Rutherford described the results this way: “It was about as credible as if you had fired a 15-inch shell at a piece of tissue paper and it came back and hit you.” The ...
... The Rutherford gold foil experiment is one of the most famous of all time. More than 25 years after conducting the experiment, Ernest Rutherford described the results this way: “It was about as credible as if you had fired a 15-inch shell at a piece of tissue paper and it came back and hit you.” The ...
Chapt 6: Arrangement of the Elements
... subsequently discovered in the next 5 years. • They were originally called the inert gases. • Recently, several compounds of xenon and krypton have been made and the term noble gases is currently used. © 2011 Pearson Education, Inc. ...
... subsequently discovered in the next 5 years. • They were originally called the inert gases. • Recently, several compounds of xenon and krypton have been made and the term noble gases is currently used. © 2011 Pearson Education, Inc. ...
Graphing Periodic Trends
... Graphing the Periodic Trends Background The Periodic Table is arranged according to Periodic Law. The Periodic Law states that when elements are arranged in order of increasing atomic number, their physical and chemical properties show a periodic pattern. These patterns can be discovered by examinin ...
... Graphing the Periodic Trends Background The Periodic Table is arranged according to Periodic Law. The Periodic Law states that when elements are arranged in order of increasing atomic number, their physical and chemical properties show a periodic pattern. These patterns can be discovered by examinin ...
File - CCHS Chemistry
... It is sometimes possible to force the outer level of an elem in 3rd or higher period to hold more than 8 e-’s ◦ - Extended Octet Noble gas comps are formed this way ...
... It is sometimes possible to force the outer level of an elem in 3rd or higher period to hold more than 8 e-’s ◦ - Extended Octet Noble gas comps are formed this way ...
Electronic Structure and Periodic Trends
... VI. Periodic Trends of the Elements Learning Goal Use the periodic table to predict relative properties of elements A. Group Number and Valence Electrons Valence Electrons: __________________________________________ For main group elements (A groups), the number of valence electrons is _____________ ...
... VI. Periodic Trends of the Elements Learning Goal Use the periodic table to predict relative properties of elements A. Group Number and Valence Electrons Valence Electrons: __________________________________________ For main group elements (A groups), the number of valence electrons is _____________ ...
1 - Wiki Home
... 7. A student was assigned to take water samples from a lake near his home. He measured the pH of one of the water samples to be 6.0. Which of the following best describes this sample of water? A. highly acidic B. slightly acidic C. highly basic D. slightly basic 8. When elements from group 1 (1A) ...
... 7. A student was assigned to take water samples from a lake near his home. He measured the pH of one of the water samples to be 6.0. Which of the following best describes this sample of water? A. highly acidic B. slightly acidic C. highly basic D. slightly basic 8. When elements from group 1 (1A) ...
1.5 trends in the periodic table
... 3. Allow the melting-point tube to drop (bottom first) through a 1-m length of glass tubing positioned vertically on the floor or laboratory bench. This knocks the solid into the sealed end of the melting-point tube. Repeat this process until the tube contains solid to a depth of 5 mm. Do not add to ...
... 3. Allow the melting-point tube to drop (bottom first) through a 1-m length of glass tubing positioned vertically on the floor or laboratory bench. This knocks the solid into the sealed end of the melting-point tube. Repeat this process until the tube contains solid to a depth of 5 mm. Do not add to ...
Organization of the Periodic Table
... Organization of the Periodic Table • The periodic table groups similar elements together. • This organization makes it easier to predict the properties of an element based on where it is in the periodic table. • Elements are listed in order of number of protons, because the periodic law states that ...
... Organization of the Periodic Table • The periodic table groups similar elements together. • This organization makes it easier to predict the properties of an element based on where it is in the periodic table. • Elements are listed in order of number of protons, because the periodic law states that ...
Period 2 element
The period 2 elements are the chemical elements in the second row (or period) of the periodic table. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior of the elements as their atomic number increases; a new row is started when chemical behavior begins to repeat, creating columns of elements with similar properties.The second period contains the elements lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. This situation can be explained by modern theories of atomic structure. In a quantum mechanical description of atomic structure, this period corresponds to the filling of the 2s and 2p orbitals. Period 2 elements obey the octet rule in that they need eight electrons to complete their valence shell. The maximum number of electrons that these elements can accommodate is ten, two in the 1s orbital, two in the 2s orbital and six in the 2p orbital. All of the elements in the period can form diatomic molecules except beryllium and neon.