AP BIOLOGY

Detailed explanation-1: -This is because Fluorine is more electronegative than Hydrogen and therefore pulls the electrons in the covalent bond closer towards it. This means that the Fluorine atom is slightly negative, while the Hydrogen atom is slightly positive.

Detailed explanation-2: -H-ion have larger size than f-why.

Detailed explanation-3: -2nd .:-Fluorineis the most electronegative element because it has 5 electrons in it’s 2P shell. The optimal electron configuration of the 2P orbital contains 6 electrons, so since Fluorine is so close to ideal electron configuration, the electrons are held very tightly to the nucleus.

Detailed explanation-4: -Thus, fluorine is the most electronegative element, while francium is one of the least electronegative. (Helium, neon, and argon are not listed in the Pauling electronegativity scale, although in the Allred-Rochow scale, helium has the highest electronegativity.)