CP Questions For Periodic Trends Coulombic Force, Atomic Radii And Electronegativity

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Name:__________________________________ Period:_________________________________

Answer the following question in a clear, concise manner.

1. As you down a Group does the Coulombic Force (CF) decrease or increase or stay the same or no specific trend. Explain the reason for the trend.

2. If the Periodic Table is a rectangle, what corner would include the element whose nucleus have the greatest pull (highest CF) to the valence electrons? Top left, Top right, Bottom left, Bottom right?
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3. As you go across a Period (row), does Atomic size (AR) decrease or increase or stay the same or no specific trend? Explain

4. If the Periodic Table is a rectangle, what corner would include the element with the SMALLEST atomic radii/size (AR)? Top left, Top right, Bottom left, Bottom right?
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5. Electronegativity (EN) has a long complicated definition. What did I say it actually means.

6. As you go across a Period, does the EN decrease or increase or stay the same or no specific trend? Explain the reason for the trend.

7. If the Periodic Table is a rectangle, what corner would include the element with the LARGEST (or greatest pull to its valence electrons)? Top left, Top right, Bottom left, Bottom right?
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8.

1. Arrange the following elements in increasing EN: (Mg, Cl, P, Rb)

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2. Align these elements in decreasing atomic size (radii), Fe, Ca, Al, O, Ba

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3. Define Ionization Energy (IE) and give the general trends for IE (include reason).

4. Give one of the two exception to the 1st IE for across a period and the reason for this trend (include an example in your discussion)(CP Learner do not do)

5. Give the most metallic element on the periodic table: ____________________

6. Which family is least reactive on the periodic table? _____________________

Why? (Hint: Think valence electrons) ____________________________________________

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7. List the following elements in decreasing atomic radii (O, C, Ni, Ca, Cs)

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8. Define Electronegativity (EN) and give the general trend with reasons (include example in discussion)

9. What are the two factors in determining Columbic Force (CF) between valence electron and positive nucleus?

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10. Give the general trend for CF on periodic table and the reason for it.

11. Explain how Atomic Radii and Ionic Radii are different for Metals and then for Non-metals.