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Daily EQ:What is Periodic Trending?

Daily EQ:What is Periodic Trending?. Warm-up 11/1/10 What is the difference between a period and group? What is the Octet Rule?p188 Why did we learn electron configurations and orbital notations?. Daily EQ:What is Periodic Trending?. Ion – charged atom ( positive or negative) cation -

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Daily EQ:What is Periodic Trending?

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  1. Daily EQ:What is Periodic Trending? Warm-up 11/1/10 What is the difference between a period and group? What is the Octet Rule?p188 Why did we learn electron configurations and orbital notations?

  2. Daily EQ:What is Periodic Trending? Ion – charged atom ( positive or negative) cation - anion Lewis Dot Structures Positive ion – loses electrons Negative ion – gains electrons

  3. 11/2/10 Daily EQ:What is Periodic Trending? Electronegativity (EN)–ability of an atom to attract an electron when the atom is in a compound - “desire to gain electron” Ionization Energy (IE)- energy required to remove an electron from an atom Atomic Radius- one half the distance between the nuclei of two atoms of the same element when the atoms are joined

  4. Homework ProblemsDue 11/5 This should be review • P149 34-39 • P. 150 50 –52 and 55-57

  5. 11/5/10 Daily EQ: What are periodic trends? Warm-up/Review Make sure you finished coloring trends 1. Which element has the largest atomic radius? Ca, Fe, Ge, Br? 2. Which of the following has the highest 1st ionization energy? Kr, Al, Mg, Ca 3. Which of the following has the highest 2nd ionization energy? Ar, Na, Mg, Cl

  6. Notes chemical bond between a metal and a non-metal make ionic compounds ionic bond- covalent bond- shielding – chemical bond between 2 non-metals make molecular compounds increase in occupied orbitals blocks(shields) electrons in highest level from attraction of protons and thus atomic size increases

  7. Homework ProblemsDue 11/8 Make sure to Read Section 6.3 p 170 on trends Also section 7.1 p187 • p207 # 31-38

  8. 11/5/10 Ticket out the door 1. Which element has the largest atomic radius? Li, B, O, Ne? 2. Which of the following has the highest 2nd ionization energy? Ar, Si, Mg, Na 3. Which of the following has the lowest electronegativity value? K, Si, V, Cl 4. Draw dot diagram for Phosphorus. 5. Draw dot diagram for Rubidium. 6. What is a cation?

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