ATOMIC STRUCTURE - IGCSE STUDY BANK
... o Note that the number of shells containing electrons is equal to the period number. The similarities (eg same Group) or differences (eg across a period) of the properties of the elements can be explained by the electronic structure of the atoms. From Period 4 onwards the length of a period signific ...
... o Note that the number of shells containing electrons is equal to the period number. The similarities (eg same Group) or differences (eg across a period) of the properties of the elements can be explained by the electronic structure of the atoms. From Period 4 onwards the length of a period signific ...
Year 9 study the new AQA GCSE specification for first examination
... mathematical to solve problems, make predictions and to develop scientific explanations and understanding of familiar and unfamiliar facts. Recognise/draw/interpret diagrams. Translate from data to a representation with a model. Use models in explanations, or match features of a model to the data fr ...
... mathematical to solve problems, make predictions and to develop scientific explanations and understanding of familiar and unfamiliar facts. Recognise/draw/interpret diagrams. Translate from data to a representation with a model. Use models in explanations, or match features of a model to the data fr ...
Periodic Table - Chemistry R: 4(AE)
... – They are metals, but have less metallic characteristics than Alkali Metals – 2 valence electrons – Chemically reactive – do not occur as free elements in nature – Harder, denser, stronger, higher boiling points, and slightly less reactive than alkali metals ...
... – They are metals, but have less metallic characteristics than Alkali Metals – 2 valence electrons – Chemically reactive – do not occur as free elements in nature – Harder, denser, stronger, higher boiling points, and slightly less reactive than alkali metals ...
UNIT 5 RECOVERED
... • When electrons are shared by two atoms a covalent bond is formed. • When electrons are transferred from one atom to another an ionic bond is formed. • When the atoms are the same they pull on the electrons equally. Example, H-H. • When the atoms are different, the atoms pull on the electrons uneve ...
... • When electrons are shared by two atoms a covalent bond is formed. • When electrons are transferred from one atom to another an ionic bond is formed. • When the atoms are the same they pull on the electrons equally. Example, H-H. • When the atoms are different, the atoms pull on the electrons uneve ...
Study Guide
... the number of electrons each energy level can hold. The first energy level holds 2 electrons, the second holds 8, the third holds 18, the fourth holds 32, and the fifth holds 50. The number of electrons in the outermost energy level of an atom is referred to as the atoms valence electrons. The numbe ...
... the number of electrons each energy level can hold. The first energy level holds 2 electrons, the second holds 8, the third holds 18, the fourth holds 32, and the fifth holds 50. The number of electrons in the outermost energy level of an atom is referred to as the atoms valence electrons. The numbe ...
Electronegativity Periodic Trend
... graph on each axes. Choose atomic number (under atomic properties) for the X-axis and for the Y-axis choose electronegativity (under atomic properties). 6. Do you notice a general trend (don’t worry about the few outliers) in the electronegativity across the period you chose? Try a couple of other p ...
... graph on each axes. Choose atomic number (under atomic properties) for the X-axis and for the Y-axis choose electronegativity (under atomic properties). 6. Do you notice a general trend (don’t worry about the few outliers) in the electronegativity across the period you chose? Try a couple of other p ...
The Atom Hypothesis
... 6.We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon- whose atomic weight would be between 65 and 75. 7.The atomic weight of an element may sometimes be amended by a knowledge of those of its contiguous elements. Thus the atomic weigh ...
... 6.We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon- whose atomic weight would be between 65 and 75. 7.The atomic weight of an element may sometimes be amended by a knowledge of those of its contiguous elements. Thus the atomic weigh ...
PPT Student Notes Blank fill-in
... 1. Took the ____________________charge, which is the number of protons in the nucleus, and ordered the periodic table using the number of protons in the atom. 2. The trends found by Mendeleev were in place. Periodic Law 1. States that physical and chemical properties of elements are properties of th ...
... 1. Took the ____________________charge, which is the number of protons in the nucleus, and ordered the periodic table using the number of protons in the atom. 2. The trends found by Mendeleev were in place. Periodic Law 1. States that physical and chemical properties of elements are properties of th ...
The Periodic Table and Periodic Law
... Metals are made up of most of the representative elements and all of the transition elements. They are generally shiny when smooth and clean, solid at room temperature, and good conductors of heat and electricity. Most are Ductile and Malleable – Ductile – the ability to be drawn into wire. Ma ...
... Metals are made up of most of the representative elements and all of the transition elements. They are generally shiny when smooth and clean, solid at room temperature, and good conductors of heat and electricity. Most are Ductile and Malleable – Ductile – the ability to be drawn into wire. Ma ...
Unit 3 Activity Exploring Periodic Trends… MORE! Name: Directions
... b. Is melting point a physical or chemical property? c. Is melting point an intensive or extensive property? Why? d. What does it mean for an atom to have a high melting point? e. Which element has the highest numerical value? f. ...
... b. Is melting point a physical or chemical property? c. Is melting point an intensive or extensive property? Why? d. What does it mean for an atom to have a high melting point? e. Which element has the highest numerical value? f. ...
California Standards Practice
... 25. The periodic table is organized into blocks representing the energy sublevel being filled with valence electrons. In the periodic table, which sequence lists the blocks in s-p-d-f order? A. W, Y, X, Z B. X, Y, Z, W C. Y, W, Z, X D. Y, Z, W, X 26. In the periodic table, which block represents the ...
... 25. The periodic table is organized into blocks representing the energy sublevel being filled with valence electrons. In the periodic table, which sequence lists the blocks in s-p-d-f order? A. W, Y, X, Z B. X, Y, Z, W C. Y, W, Z, X D. Y, Z, W, X 26. In the periodic table, which block represents the ...
Procedure
... Graph 3 - For elements 3-20, make a graph of the energy required to remove the easiest electron (first ionization energy) as a function of atomic number. Plot atomic number on the X axis and energy required on the Y axis. After creating the graph, use a colored pen or pencil to draw a vertical line ...
... Graph 3 - For elements 3-20, make a graph of the energy required to remove the easiest electron (first ionization energy) as a function of atomic number. Plot atomic number on the X axis and energy required on the Y axis. After creating the graph, use a colored pen or pencil to draw a vertical line ...
2 periodic table pd9
... Elements with the same Day 1 2-27 # of valence are in the same _______ on the periodic table. a. alkali metals = __ valence b. alkaline earth metals = __ valence ...
... Elements with the same Day 1 2-27 # of valence are in the same _______ on the periodic table. a. alkali metals = __ valence b. alkaline earth metals = __ valence ...
Chapter 5.3 Periodic Properties
... Consider two main-group elements, A and B. Element A has a first ionization energy of 419 kJ/mol. Element B has a first ionization energy of 1000 kJ/mol. Decide if each element is more likely to be in the s block or p block. Which element is more likely to form a positive ion ...
... Consider two main-group elements, A and B. Element A has a first ionization energy of 419 kJ/mol. Element B has a first ionization energy of 1000 kJ/mol. Decide if each element is more likely to be in the s block or p block. Which element is more likely to form a positive ion ...
Chapter 5
... 14. Elements with atomic number 57 to 71 are called lanthanide series and elements with atomic number 89 to 103 are called actinide. 15. Elements having 1 valence electron are placed in group one. Elements having 2 valence electrons are placed in group 2. 16. Elements having 3 valence electrons are ...
... 14. Elements with atomic number 57 to 71 are called lanthanide series and elements with atomic number 89 to 103 are called actinide. 15. Elements having 1 valence electron are placed in group one. Elements having 2 valence electrons are placed in group 2. 16. Elements having 3 valence electrons are ...
Periodicity
... protons discovered by Goldstein. • This discovery led to the term atomic number. ...
... protons discovered by Goldstein. • This discovery led to the term atomic number. ...
Example
... • Metals: usually shiny, conductors, malleable, ductile, solids at room temperature. On left side of periodic table • Non-metals: gas or brittle solid at room temperature, insulators. On right side of periodic table. • Metalloids: have properties of both metals and non-metals. Between metals and non ...
... • Metals: usually shiny, conductors, malleable, ductile, solids at room temperature. On left side of periodic table • Non-metals: gas or brittle solid at room temperature, insulators. On right side of periodic table. • Metalloids: have properties of both metals and non-metals. Between metals and non ...
Atoms
... • Metals: usually solid at room temperature, good conductors of heat and electricity, bendable, malleable (can be pounded into sheets), shiny and ductile (can be ...
... • Metals: usually solid at room temperature, good conductors of heat and electricity, bendable, malleable (can be pounded into sheets), shiny and ductile (can be ...
7-1 Notes: Arranging the Elements
... elements in 1869. He saw that when the elements were arranged in order of increasing atomic mass, those that had similar properties fell into a repeating pattern. The pattern was periodic, meaning “happening at regular intervals.” His table became known as the periodic table of the elements. A few e ...
... elements in 1869. He saw that when the elements were arranged in order of increasing atomic mass, those that had similar properties fell into a repeating pattern. The pattern was periodic, meaning “happening at regular intervals.” His table became known as the periodic table of the elements. A few e ...
File - Chemical Engineering
... corresponded to the filling of a quantum shell of electrons. There are progressively longer periods further down the table, grouping the elements into s-, p-, d- and f-blocks to reflect their electron configuration.In printed tables, each element is usually listed with its element symbol and atomic ...
... corresponded to the filling of a quantum shell of electrons. There are progressively longer periods further down the table, grouping the elements into s-, p-, d- and f-blocks to reflect their electron configuration.In printed tables, each element is usually listed with its element symbol and atomic ...
Homework Packet - Chemistry from AZ
... horizontal rows called periods are numbered 1 to 7; elements in the same period have the same number of principle energy levels (PEL’s) or shells vertical columns called groups or families, are numbered 1 to 18; elements in the same group have the same number of valence electrons and therefore have ...
... horizontal rows called periods are numbered 1 to 7; elements in the same period have the same number of principle energy levels (PEL’s) or shells vertical columns called groups or families, are numbered 1 to 18; elements in the same group have the same number of valence electrons and therefore have ...
C1 Atomic Structure Grade Descriptor
... I can justify why the model of the atom has changed over time. I can evaluate the current model of an atom. I can use the periodic table to find atomic number and mass number data and use it to determine the number of each subatomic particle in any given atom. I can recognise and describe patterns i ...
... I can justify why the model of the atom has changed over time. I can evaluate the current model of an atom. I can use the periodic table to find atomic number and mass number data and use it to determine the number of each subatomic particle in any given atom. I can recognise and describe patterns i ...
ionic compound - East Penn School District
... Many are gases at room temperature Lack luster Low melting points ...
... Many are gases at room temperature Lack luster Low melting points ...
Group 3 element
Group 3 is a group of elements in the periodic table. This group, like other d-block groups, should contain four elements, but it is not agreed what elements belong in the group. Scandium (Sc) and yttrium (Y) are always included, but the other two spaces are usually occupied by lanthanum (La) and actinium (Ac), or by lutetium (Lu) and lawrencium (Lr); less frequently, it is considered the group should be expanded to 32 elements (with all the lanthanides and actinides included) or contracted to contain only scandium and yttrium. The group itself has not acquired a trivial name; however, scandium, yttrium and the lanthanides are sometimes called rare earth metals.Three group 3 elements occur naturally, scandium, yttrium, and either lanthanum or lutetium. Lanthanum continues the trend started by two lighter members in general chemical behavior, while lutetium behaves more similarly to yttrium. This is in accordance with the trend for period 6 transition metals to behave more similarly to their upper periodic table neighbors. This trend is seen from hafnium, which is almost identical chemically to zirconium, to mercury, which is quite distant chemically from cadmium, but still shares with it almost equal atomic size and other similar properties. They all are silvery-white metals under standard conditions. The fourth element, either actinium or lawrencium, has only radioactive isotopes. Actinium, which occurs only in trace amounts, continues the trend in chemical behavior for metals that form tripositive ions with a noble gas configuration; synthetic lawrencium is calculated and partially shown to be more similar to lutetium and yttrium. So far, no experiments have been conducted to synthesize any element that could be the next group 3 element. Unbiunium (Ubu), which could be considered a group 3 element if preceded by lanthanum and actinium, might be synthesized in the near future, it being only three spaces away from the current heaviest element known, ununoctium.