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determining oxidation numbers
determining oxidation numbers

... 5. Other halogens have ONs = -1 except when bound to oxygen or another halogen higher in the column. 6. The ON for hydrogen is +1, except when bound to a metal, when it is -1. 7. Alkali metals always have an ON = +1. 8. Polyatomic ions all have specific total charges that will be the sum of the oxid ...
Chemical Bonding Notes for 2016
Chemical Bonding Notes for 2016

... • Metals do not combine with metals. • They form alloys which is a solution of a metal in a metal. • Examples are steel, brass, bronze and pewter. ...
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... Octet Rule -atoms will gain, lose, or share electrons to achieve a noble gas configuration. Ionic compound -a compound composed entirely of ions  formed by the gaining and losing of valence electrons Ionic Bonding - a positively charged ion is attracted to a negatively charge ion. ...
Midterm Review.ppt - Chemistry R: 4(AE)
Midterm Review.ppt - Chemistry R: 4(AE)

... • When electrons in an atom in an excited state fall to lower energy levels, energy is 1. absorbed, only 2. released, only 3. neither released nor absorbed 4. both released and absorbed ...
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... • Gain of electrons = anion • Loss of electrons = cations ...
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... 4. When electrons in an atom in an excited state fall to lower energy levels, energy is 1. absorbed, only 2. released, only 3. neither released nor absorbed 4. both released and absorbed ...
Bonding Notes
Bonding Notes

... 2) what types of bonds hold these atoms together (ionic or covalent) Why do atoms form bonds? This is a topic that we will expand on greatly as we progress through grade 11 and 12 chemistry. For our purposes, we can understand bonding as a consequence of the maximum stability that atoms have when th ...
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... The octet rule states that elements gain or lose electrons to attain an electron configuration of the nearest noble gas. ...
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... The nature of most atoms is that they are LONELY and sometimes AGGRESSIVE! Most atoms team up with or overtake other atoms in an attempt to get the “right” number of electrons. This is how molecules are formed. Only the NOBLE GASSES can exist on their own. ATOMS will switch partners when provoked. T ...
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1. Millikan did his experiments with the balance of
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... Mo3+ is paramagnetic because in the d orbital there are unpaired electrons. b.) The condensed ground-state electron configuration of Au+ : [Xe] 6s2, 4f14,5d8 Au+ is paramagnetic because in the d orbital there are unpaired electrons. c.) The condensed ground-state electron configuration of Mn2+ : [Ar ...
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... Trends in atomic size (atoms in the same group, atoms in the same row); explanation for trends Definition of first ionization energy and higher ionization energies Trends in first ionization energy (atoms in the same group, atoms in the same row); explanation for trends Jumps in higher ionization en ...
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...  Ex: Na, C, H, O, N K, Cl, Au  The 4 most abundant elements found in organisms is C, H, O, N  Atomic number of an elements is the number of protons  Carbon has an atomic number of 6  Helium has an atomic number of 2 (C) Chemical Compounds  In nature, most elements are found as compounds  Comp ...
Lecture 1.1 Some preliminary chemistry knowledge, ppt file
Lecture 1.1 Some preliminary chemistry knowledge, ppt file

... atom, the single electron is held in its orbital by its attraction to the proton in the nucleus. ...
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... II. 3 FeCl III. 2 NiCl IV. 2 ZnCl A. I and II only B. II and III only C. III and IV only D. I, II, III and IV ...
Intro Biochemistry/Ecology
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Remember Question words

... Atomic structure nucleus (protons, neutrons) shells (electrons) shell = a particular region where electrons can orbit the nucleus of an atom valence electron = an electron in the outermost shell of an atom charges (positive = proton; neutral = neutron; negative = ...
Chemistry Questions
Chemistry Questions

... 3. The positively charged particle in the nucleus of an atom is 4. What is the total number of electrons in the nucleus of an atom of potassium-42? 5. Which of the following elements have the greatest number of neutrons? a. 37Cl b. 39K 4. An atomic mass unit is defined as exactly a. 1/16 the mass of ...
Midterm Review Sample Content Questions
Midterm Review Sample Content Questions

... 17. Which of the ions in problem 15 are anions? How would you recognize an anion? 18. What is the significance of Rutherford’s gold foil experimentation? 19. What is the significance of the Plum pudding model of the atom? 20. Bohr is known for the “planetary model” of the atom – what does this mean? ...
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Slide 1

... Ion separation and analysis using MS/MS technique AHB+ ions are separated and further analyzed by MS/MS. ...
WS on obj. 1-11
WS on obj. 1-11

... 14. _____ (T/F) Calcium will need to lose two electrons to get the electron configuration of argon. 15. _____ (T/F) All the alkaline earth elements (Group 2A) will need to lose two electrons to obtain a noble gas electron configuration. 16. _____ (T/F) All the elements of the oxygen group (Group 6A ...
bonding notes for votech
bonding notes for votech

...  Only valence e- involved in bonding  Bonding occurs to have complete outermost energy levels – to become like noble gases ...
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Ion

An ion (/ˈaɪən, -ɒn/) is an atom or a molecule in which the total number of electrons is not equal to the total number of protons, giving the atom or molecule a net positive or negative electrical charge.Ions can be created, by either chemical or physical means, via ionization. In chemical terms, if a neutral atom loses one or more electrons, it has a net positive charge and is known as a cation. If an atom gains electrons, it has a net negative charge and is known as an anion. An ion consisting of a single atom is an atomic or monatomic ion; if it consists of two or more atoms, it is a molecular or polyatomic ion. Because of their electric charges, cations and anions attract each other and readily form ionic compounds, such as salts. In the case of physical ionization of a medium, such as a gas, what are known as ""ion pairs"" are created by ion impact, and each pair consists of a free electron and a positive ion.
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