5.2 CHAPTER 5. THE PERIODIC TABLE
c. First ionisation energy
d. Boiling point
4. Given the following table:Element Na Mg Al Si P S Cl Ar
Atomic number 11 12 13 14 15 16 17 18
Density (g·cm−^3 ) 0,97 1,74 2,70 2,33 1,82 2,08 3,17 1,78
Melting point (◦C) 370,9 923,0 933,5 1687 317,3 388,4 171,6 83,8
Boiling point (◦C) 1156 1363 2792 3538 550 717,8 239,1 87,3
Electronegativity 0.93 1.31 1.61 1.90 2.19 2.58 3.16 -Draw graphs to show the patterns in the following physical properties:
a. Density
b. Boiling point
c. Melting point
d. Electronegativity
5. A graph showing the pattern in first ionisation energy for the elements in
period 3 is shown below:Na Mg Al Si P S Cl Ar
a. Explain the pattern by referring to the electron configuration
b. Predict the pattern in the first ionisation energy for the elements in
period 2.
c. Draw a rough graph to show the pattern predicted in the previous
question.More practice video solutions or help at http://www.everythingscience.co.za(1.) 001v (2.) 001w (3.) 001x (4.) 001y (5.) 001z104 Chemistry: Matter and materials