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NOTES – NOV 27
WRITE IT DOWN
• An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?
• An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?
• An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?
• The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?
• The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?
• The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?
• COLOR in the UNREACTIVE Group (won’t bond with anything)
• COLOR in the UNREACTIVE Group (won’t bond with anything)
• Color in the HALOGENS that form HALIDES
• Color in the HALOGENS that form HALIDES
• COLOR in the group that requires the least energy to form a bond
• COLOR in the group that requires the least energy to form a bond
• A measure of the ability of a bonded atom to attract electrons to itself is its’?
• A measure of the ability of a bonded atom to attract electrons to itself is its’?
•ELECTRONEGATIVITY
• Write 1 trends that shows INCREASING atomic radii
• Write 1 trends that shows INCREASING atomic radii
• WRITE ANOTHER trend that shows INCREASING atomic radii
• WRITE ANOTHER trend that shows INCREASING atomic radii
• What is the difference between an ion and an atom?
• What is the difference between an ion and an atom?
• IONS = have a charge•ATOMS = neutral
• How many valence electrons do all ions want?
• How many valence electrons do all ions want?
8
• If I have 7 valence electrons am I likely to gain an electron or lose the 7 electrons?
• If I have 7 valence electrons am I likely to gain an electron or lose the 7 electrons?
• Easier to gain 1 then lose 7
• If I have 2 valence electrons….am I likely to gain 6 valence electrons or lose the 2 electrons?
• If I have 2 valence electrons….am I likely to gain 6 valence electrons or lose the 2 electrons?
• Easier to lose 2 then try to get 6 more……
• How many valence electrons does group 16 have (it is not 16)
• How many valence electrons does group 16 have (it is not 16)
6
• How many valence electrons does group 2 have?
• How many valence electrons does group 2 have?
2
• DO we EVER talk about valence electrons in the middle (transitional metals)?
• DO we EVER talk about valence electrons in the middle (transitional metals)?
• NO....NO….NO…NO…and ….NO (only the FIXED charge groups)
• SHOULD you ever assume that LIKE Group 3….has 3 valence electrons
• SHOULD you ever assume that LIKE Group 3….has 3 valence electrons
• (the answer is no ….no..no.. no..and no)
•Which group does not need any more VALENCE electrons?
•Which group does not need any more VALENCE electrons?
• GROUP 18 (NOBLE GASES)
•Nitrogen =
•Nitrogen = Nitride
•Sulfur =
•Sulfur = Sulfide
•Oxygen =
•Oxygen = Oxide
•Fluorine =
•Fluorine = Fluoride
•Arsenic =
•Arsenic = Arsenide
•Iodine =
•Iodine = Iodide
MOST IMPORTANT
DO you know the charge of GROUP 1 and 2?
MOST IMPORTANT
DO you know the charge of GROUP 1 and 2?
WHY EVER USE A ROMAN NUMERAL on those groups then…..