Fluorine, though higher than chlorine in the periodic table, has a very small atomic size. This makes the fluoride anion so formed unstable (highly reactive) due to a very high charge/mass ratio. Also, fluorine has no d-orbitals, which limits its atomic size. As a result, fluorine has an electron affinity less than that of chlorine. See this, archived here.
intermolecular forces - Why does fluorine form only one hydrogen bond ...
Both oxygen and fluorine (and nitrogen, carbon, boron and neon) have a $\mathrm {2p}$ orbital as their highest occupied, so we expect to ionise from that. If you draw a trend of the ionisation energies, you observe that the energy rises from boron to nitrogen, is lower for oxygen and rises from oxygen to neon.
The meaning of MOLECULAR is of, relating to, consisting of, or produced by molecules. How to use molecular in a sentence.
MOLECULAR meaning: 1. relating to molecules (= the simplest units of a chemical substance): 2. relating to molecules…. Learn more.
Molecular biology / məˈlɛkjʊlər / is a branch of biology that seeks to understand the molecular structures and chemical processes that are the basis of biological activity within and between cells. It is centered largely on the study of nucleic acids (such as DNA and RNA) and proteins.
Molecular means relating to or involving molecules. ...the molecular structure of fuel.
Define molecular. molecular synonyms, molecular pronunciation, molecular translation, English dictionary definition of molecular. adj. 1. Of, relating to, or consisting of molecules.
Molecular Biology is the field of biology that studies the composition, structure and interactions of cellular molecules such as nucleic acids and proteins that carry out the biological processes...