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The Periodic Table
The Periodic Table

... Patterns, atomic number and electrons The periodic table shows that patterns in the properties of elements are linked to atomic number. atomic number = number of protons number of protons = number of electrons atomic number = number of electrons Therefore, as atomic number increases by one, the num ...
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Unit Expectations – Periodic Table
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... n  Relate the number of valence electrons to groups in the periodic table and to properties of elements in those groups. n  Predict the reactivity of some elements based on their locations within a group. n  Identify some properties of common A group elements. ...
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... Nonmetals are dull and poor conductors of heat and electric current. The solid nonmetals tend to be brittle and unmalleable. The most reactive of the nonmetals are found on the far right of the periodic table (group 17). ...
Chem Periodicity, Reactivity, Redox 2009 Yingxin
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... @ Most reactive non-metals @ Fluorine is the most reactive element in the periodic table @ Hence, they are powerful oxidizing agents @ React vigorously with most metals to form ionic salts @ Reactivity decreases down group @ Decreased oxidizing power, less ability to gain electrons due to more shell ...
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Periodic Table 2015
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... • 3.2.2 Describe and explain the trends in atomic radii, ionic radii, first ionization energies, electronegativities and melting points for the alkali metals (Li  Cs) and the halogens (F  I). • 3.2.3 Describe and explain the trends in atomic radii, ionic radii, first ionization energies and electr ...
c1l2ch06
c1l2ch06

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11. Patterns in the Periodic Table
11. Patterns in the Periodic Table

... Where were the elements made? There are 92 naturally-occurring elements and about 15 artificially-produced elements. Elements were originally made in stars. In the early stages of a star’s life, light elements, such as hydrogen and helium, are formed. These fused together to make heavier elements s ...
11. Patterns in the Periodic Table
11. Patterns in the Periodic Table

... Where were the elements made? There are 92 naturally-occurring elements and about 15 artificially-produced elements. Elements were originally made in stars. In the early stages of a star’s life, light elements, such as hydrogen and helium, are formed. These fused together to make heavier elements s ...
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Group 12 element

Group 12, by modern IUPAC numbering, is a group of chemical elements in the periodic table. It includes zinc (Zn), cadmium (Cd) and mercury (Hg). The further inclusion of copernicium (Cn) in group 12 is supported by recent experiments on individual copernicium atoms. Group 12 is also known as the volatile metals, although this can also more generally refer to any metal (which need not be in group 12) that has high volatility, such as polonium or flerovium.Formerly this group was named IIB (pronounced as ""group two B"", as the ""II"" is a Roman numeral) by CAS and old IUPAC system.The three group 12 elements that occur naturally are zinc, cadmium and mercury. They are all widely used in electric and electronic applications, as well as in various alloys. The first two members of the group share similar properties as they are solid metals under standard conditions. Mercury is the only metal that is a liquid at room temperature. While zinc is very important in the biochemistry of living organisms, cadmium and mercury are both highly toxic. As copernicium does not occur in nature, it has to be synthesized in the laboratory.
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