Question

Use a periodic table to rank the following elements from Greatest Electronegativity to Least Electronegativity. (Highest to lowest!)

barium
chlorine
sleenium\
francium

Answer 1

To rank the elements barium, chlorine, selenium, and francium by electronegativity from greatest to least, we can refer to the general trends in the periodic table:

1. Electronegativity increases across a period (left to right).
2. Electronegativity decreases down a group (top to bottom).

Based on these trends, here are the electronegativity values (on the Pauling scale) for the given elements:

- Chlorine (Cl): 3.16
- Selenium (Se): 2.55
- Barium (Ba): 0.89
- Francium (Fr): 0.7 (noted as very low, as it's the least electronegative alkali metal)

Now, we can rank them accordingly from greatest to least electronegativity:

1. Chlorine (Cl)
2. Selenium (Se)
3. Barium (Ba)
4. Francium (Fr)

So the final ranking is:

**Cl > Se > Ba > Fr**