Question

periodic trends practice problems: electronegativity

1. define electronegativity.
2. rank the following elements by decreasing electronegativity: francium, germanium, manganese, oxygen.
3. rank the following elements by decreasing electronegativity: zinc, vanadium, titanium, selenium, calcium
4. rank the following elements by decreasing electronegativity:boron, thallium, gallium, indium
5. rank the following elements by decreasing electronegativity: barium, mercury, tungsten, polonium
6. rank the following elements by increasing electronegativity: carbon, aluminum, oxygen, potassium.
7. rank the following elements by increasing electronegativity: fluorine, beryllium, oxygen, lithium.
8. rank the following elements by increasing electronegativity: carbon, lead, germanium, tin.
9. rank the following elements by increasing electronegativity: silver, niobium, xenon, rubidium.

10.rank the following elements by increasing electronegativity: sulfur, oxygen, neon, aluminum.
11.describe the trend for electronegativity as you move from top to bottom within a group on the periodic table. why is this the case?

Explanation:

1. Electronegativity is the ability of an atom in a chemical bond to attract electrons to itself.

2 - 10. Electronegativity generally increases across a period and decreases down a group in the periodic table. Using this trend and the positions of the elements in the periodic table, we can rank them.

1. As you move from top to bottom within a group on the periodic table, electronegativity decreases. This is because the atomic radius increases down a group, so the out - ermost electrons are farther from the nucleus and less strongly attracted to it.

Answer:

1. Electronegativity is the ability of an atom in a chemical bond to attract electrons to itself.
2. Oxygen > Manganese > Germanium > Francium
3. Selenium > Zinc > Vanadium > Titanium > Calcium
4. Boron > Gallium > Indium > Thallium
5. Polonium > Mercury > Tungsten > Barium
6. Potassium < Aluminum < Carbon < Oxygen
7. Lithium < Beryllium < Oxygen < Fluorine
8. Lead < Tin < Germanium < Carbon
9. Rubidium < Niobium < Silver < Xenon
10. Aluminum < Sulfur < Oxygen < Neon
11. Electronegativity decreases. Atomic radius increases, reducing electron - nucleus attraction.