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Atomic Number
Atomic Number

... Atomic Number The atomic number • is a whole number specific for each element. • is the same for all atoms of an element. • is equal to the number of protons in an atom. • appears above the symbol of an element in the periodic table. Atomic number ...
Aleksander Herman
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Role of Water as a Solvent

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Chapter 17 Thermodynamics: Directionality of Chemical Reactions
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Bonding-and-Intermolecular-Forces
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Chapter 3 Lecture Slides
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... The n=4 quantum level has sixteen orbitals. •  There is one 4s orbital, three 4p orbitals, five 4d orbitals, and seven 4f orbitals. •  The f orbitals have shapes that are even more complicated then the d orbitals. •  The shapes of the 4s, 4p,and 4d orbitals are similar to those of the 3s, 3p, and 3 ...
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Topic 1 - Rates of Reaction
Topic 1 - Rates of Reaction

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Thomson`s Model of the Atom
Thomson`s Model of the Atom

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2.1 The Atomic Theory of Matter: The Early History
2.1 The Atomic Theory of Matter: The Early History

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Chapter 4 - Colby College Wiki
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Calculating Average Atomic Mass
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+ H 2 O(g)
+ H 2 O(g)

... Solution : First, the oxidation number of each atom have to be calculated and check if any of them changed. None of the oxidation numbers changes. CaO is a basic oxide as well as NH4+ is the protonated ammonia, then it can deliver H+ as an acid, then this reaction might be an acid base reaction. It ...
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Unbinilium

Unbinilium /uːnbaɪˈnɪliəm/, also known as eka-radium or simply element 120, is the temporary, systematic element name of a hypothetical chemical element in the periodic table with the temporary symbol Ubn and the atomic number 120. Unbinilium and Ubn are the temporary systematic IUPAC name and symbol, until a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkaline earth metal, and the second element in the eighth period.To date, all attempts to synthesize this element have been unsuccessful. Its position as the seventh alkaline earth metal suggests that it would have similar properties to the alkaline earth metals, beryllium, magnesium, calcium, strontium, barium, and radium; however, relativistic effects may cause some of its properties to differ from those expected from a straight application of periodic trends. For example, unbinilium is expected to be less reactive than barium and radium and be closer in behavior to strontium, and while it should show the characteristic +2 oxidation state of the alkaline earth metals, it is also predicted to show the +4 oxidation state unknown in any other alkaline earth metal.
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