5.1 Structure of the Periodic Table
... The atomic number of an atom is the number of protons in each atom of that element. Atomic Number = Proton Number Because atoms are electrically neutral, the atomic number is also the number of electrons. Atomic Number = Electron Number The mass number tells you the number of protons and neutrons in ...
... The atomic number of an atom is the number of protons in each atom of that element. Atomic Number = Proton Number Because atoms are electrically neutral, the atomic number is also the number of electrons. Atomic Number = Electron Number The mass number tells you the number of protons and neutrons in ...
Periodic table intro
... Families of Elements There are four specially-named families. Alkali metals is the first group. They are soft, shiny metals that are very reactive. Alkaline earth metals is the second group. They are shiny, silvery metals that are somewhat reactive, but not as reactive as alkali metals. ...
... Families of Elements There are four specially-named families. Alkali metals is the first group. They are soft, shiny metals that are very reactive. Alkaline earth metals is the second group. They are shiny, silvery metals that are somewhat reactive, but not as reactive as alkali metals. ...
L2: The Atom, Standard Notation and Borh
... Use the periodic table (p.647 in your textbook) to help you. The atomic number is on the top left side of each element symbol on the periodic table and the atomic mass is below each element symbol. For example carbon has atomic number 6 and mass of 12. (Note: The mass is rounded to the nearest whole ...
... Use the periodic table (p.647 in your textbook) to help you. The atomic number is on the top left side of each element symbol on the periodic table and the atomic mass is below each element symbol. For example carbon has atomic number 6 and mass of 12. (Note: The mass is rounded to the nearest whole ...
ORGANIZATION OF THE PERIODIC TABLE
... Groups 13-16 = BCNO group 3-6 valence electrons Group 17 = Halogens (combine to form salts) 7 valence electrons Group 18 = Nobel Gases (least reactive) 8 valence electrons Lanthanides & Actinides - Many are radioactive, also called rare earth metals ...
... Groups 13-16 = BCNO group 3-6 valence electrons Group 17 = Halogens (combine to form salts) 7 valence electrons Group 18 = Nobel Gases (least reactive) 8 valence electrons Lanthanides & Actinides - Many are radioactive, also called rare earth metals ...
File
... b. Dashed lines for a property indicate that data is available. Some elements, for example, may not form a compound with hydrogen. 3. Working together, discuss the possibilities for arrangement of the element cards with all members of the group, and look for a logical arrangement of the cards. Consi ...
... b. Dashed lines for a property indicate that data is available. Some elements, for example, may not form a compound with hydrogen. 3. Working together, discuss the possibilities for arrangement of the element cards with all members of the group, and look for a logical arrangement of the cards. Consi ...
4-3 Families of Elements
... d. Technetium and promethium are synthetic elements i. Technetium and promethium are both man-made, radioactive elements ii. The last two periods of the transition metals are placed toward the bottom of the periodic table so that similar elements elsewhere in the table still line up. iii. All elemen ...
... d. Technetium and promethium are synthetic elements i. Technetium and promethium are both man-made, radioactive elements ii. The last two periods of the transition metals are placed toward the bottom of the periodic table so that similar elements elsewhere in the table still line up. iii. All elemen ...
Chapter 7:
... valence electrons and is higher in atomic mass than the element phosphorous but lower in mass than arsenic. Identify the element’s group name and number, and name the element. An element is metallic and radioactive. It has 6 valence electrons. Identify the element’s group number and name the element ...
... valence electrons and is higher in atomic mass than the element phosphorous but lower in mass than arsenic. Identify the element’s group name and number, and name the element. An element is metallic and radioactive. It has 6 valence electrons. Identify the element’s group number and name the element ...
Reactivity of Atoms Based on Their Placement in The Periodic Table
... The atomic mass of chlorine is 35.453. How was this calculated? There are two natural isotopes of chlorine, chlorine35 (17p+ and 18n) and chlorine 37 (17p+ and 20n) 35.453 is a weighted average because the percentage of Cl35 that is found in nature is 75.78% and percentage of Cl37 is 24.22% S ...
... The atomic mass of chlorine is 35.453. How was this calculated? There are two natural isotopes of chlorine, chlorine35 (17p+ and 18n) and chlorine 37 (17p+ and 20n) 35.453 is a weighted average because the percentage of Cl35 that is found in nature is 75.78% and percentage of Cl37 is 24.22% S ...
20161025140773
... – To have a convenient way to compare the masses of atoms, scientists chose one isotope to serve as a standard – An atomic mass unit (amu) is defined as one twelfth the mass of a carbon-12 atom ...
... – To have a convenient way to compare the masses of atoms, scientists chose one isotope to serve as a standard – An atomic mass unit (amu) is defined as one twelfth the mass of a carbon-12 atom ...
Elements and the Periodic Table Practice Test
... 9. There exists several _____________ of argon, such as Ar-36, Ar-38, and Ar-40. 10.Yet the mass for argon on the periodic table is 39.948 atomic mass units and not 36, 38, or 40. Explain why. ...
... 9. There exists several _____________ of argon, such as Ar-36, Ar-38, and Ar-40. 10.Yet the mass for argon on the periodic table is 39.948 atomic mass units and not 36, 38, or 40. Explain why. ...
Atoms and Periodic Table Unit Plan IS
... Course: Integrated II Unit Number and Title: Atoms & the Periodic Table ...
... Course: Integrated II Unit Number and Title: Atoms & the Periodic Table ...
CP CHEMISTRY STUDY GUIDE
... Periodic Table, and explain the difference in the oxidation numbers of metals and nonmetals in terms of atomic structure and position on the Periodic Table. ...
... Periodic Table, and explain the difference in the oxidation numbers of metals and nonmetals in terms of atomic structure and position on the Periodic Table. ...
6-1-Periodic Law
... It was found that if Mendeleev's table was ordered by atomic number instead of atomic mass the inconsistencies in the table were eliminated. This is the blueprint for the modern periodic table. ...
... It was found that if Mendeleev's table was ordered by atomic number instead of atomic mass the inconsistencies in the table were eliminated. This is the blueprint for the modern periodic table. ...
of the periodic table
... Each contained element's symbol, atomic weight and characteristic chemical and physical properties Arranged the cards in order of ascending atomic weight. Elements fell into vertical groups of elements of similar properties ...
... Each contained element's symbol, atomic weight and characteristic chemical and physical properties Arranged the cards in order of ascending atomic weight. Elements fell into vertical groups of elements of similar properties ...
Periodic Table
... Known properties were: melting point, density, color, atomic mass, # of chemical bonds an element can form. Atomic mass is the average mass of one atom of that element. ...
... Known properties were: melting point, density, color, atomic mass, # of chemical bonds an element can form. Atomic mass is the average mass of one atom of that element. ...
Unit 4: Periodic Table - Teach-n-Learn-Chem
... by taking a neutral atom and adding or removing one or more electrons 17. What is a cation, and how is one formed? a positively charged ion; a neutral atom loses one or more electrons 18. How is a cation named? using the name of the parent atom, and then saying “ion” 19. What is an anion, and how is ...
... by taking a neutral atom and adding or removing one or more electrons 17. What is a cation, and how is one formed? a positively charged ion; a neutral atom loses one or more electrons 18. How is a cation named? using the name of the parent atom, and then saying “ion” 19. What is an anion, and how is ...
Questions Periodic Table Live
... nuclear stability” in a sea of less stable nuclei. Another island of nuclear stability is predicted to occur at approximately atomic number 164. For element 164, predict the properties listed in question 1. The properties of element 164 should be similar to those of Pb and element 114. (There is a n ...
... nuclear stability” in a sea of less stable nuclei. Another island of nuclear stability is predicted to occur at approximately atomic number 164. For element 164, predict the properties listed in question 1. The properties of element 164 should be similar to those of Pb and element 114. (There is a n ...
February 25 – Periodicity
... • it can form compounds with halogens, just as the metals of group 1 • it could also be place in group 17 (the halogens) because it can also react with metals, such as sodium, and non-metals, such as nitrogen • because of its unique characteristics, hydrogen does not have a definite position on the ...
... • it can form compounds with halogens, just as the metals of group 1 • it could also be place in group 17 (the halogens) because it can also react with metals, such as sodium, and non-metals, such as nitrogen • because of its unique characteristics, hydrogen does not have a definite position on the ...
Notes
... Some antibiotics work by binding ions such as Na+ and K+ and carrying them across the cell wall artificially altering ions concentrations and killing the cell. For example valinomycin has a hydrophilic interior that binds metal ions and lipophilic exterior that allows it to cross the cell wall. Pota ...
... Some antibiotics work by binding ions such as Na+ and K+ and carrying them across the cell wall artificially altering ions concentrations and killing the cell. For example valinomycin has a hydrophilic interior that binds metal ions and lipophilic exterior that allows it to cross the cell wall. Pota ...
MS Word Printable
... 6. In an electrically neutral carbon atom, how many protons are present? ____ how many electrons? _____ 7. The elements in the far right column, group 8 or VIII, are considered stable in terms of bonding. Name the radioactive element in group 8. _______ How many neutrons are in the nucleus? ________ ...
... 6. In an electrically neutral carbon atom, how many protons are present? ____ how many electrons? _____ 7. The elements in the far right column, group 8 or VIII, are considered stable in terms of bonding. Name the radioactive element in group 8. _______ How many neutrons are in the nucleus? ________ ...
Review Sheet - Atoms, Elements, Periodic Table Ato
... o A vertical column of the periodic table is called a ________________. o Elements in the same vertical column have very similar _______________. o A horizontal row of the periodic table is called a ________________. ...
... o A vertical column of the periodic table is called a ________________. o Elements in the same vertical column have very similar _______________. o A horizontal row of the periodic table is called a ________________. ...
Trends in Atomic Radii – Visualization Activity
... The reactivity of an atom depends on how easily the _____________________ electrons can be removed from or attracted to the atom, and that depends on their distance from the attractive force of the __________________. The further away electrons are from the nucleus, the ________________ eas ...
... The reactivity of an atom depends on how easily the _____________________ electrons can be removed from or attracted to the atom, and that depends on their distance from the attractive force of the __________________. The further away electrons are from the nucleus, the ________________ eas ...
Periodic Table
... 1. In the past people believed that there were only 4 elements now we know that there are over 100 elements 2. Everything is made of elements 3. A reason of your own. ...
... 1. In the past people believed that there were only 4 elements now we know that there are over 100 elements 2. Everything is made of elements 3. A reason of your own. ...
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.