Why there is high jump in the value of the radius of the flourine and the neon
Answers
Answer:
F: 135 pm
Ne:154 pm
Neon is mono atomic whereas fluorine is a diatomic molecule. so what we find as the atomic radius of a noble gas is its van der waal radius and not its covalent radius. whereas for a fluorine molecule we measure its covalent radius.
Covalent radius is half the inter nuclear distance between two atoms of the same element bound by a single covalent bond in a molecule.
on the other hand, van der waal radius is defined as half of inter nuclear distance between two adjacent atoms of an element belonging to neighbouring molecule in its the solid state.
Thu the value of van der waal radius is always greater than the value of covalent radius and so is the radius of neon than that of fluorine.
Ps: this rend is true for all the noble gas adjacent to their corresponding halogen.