If fluorine has an atomic mass of 18.998 and there are isotopes of both fluorine-18 and fluorine-19?

Question

, which of the two isotopes occurs in larger numbers naturally?

Answer 1

Fluorine is considered to be monoisotopic since only one isotope is stable. Remember that atomic weights are based on carbon 12.

Answer 2

fluorine-19
think of it as an average. If you had more of the fluorine-18, the number would be closer to 18. Since it is so close to 19, it means that there is very little fluorine-18 naturally found in comparison to fluorine-19

Answer 3

Electronegativity is rather considerable, and particularly has extra value in how an ionic compound varieties. Fluorine needs to to get that one final electron to end it particularly is shell, and it particularly is an ionic bond (specific F is in many organics, yet it particularly is previous the scope of the question). you're clarification shows you're thinking, and it particularly is not incorrect, even nevertheless it does not clarify this question. straightforward to visualise ionic compounds from the periodic table would be deduced by watching the extra electropositive, communities a million and a pair of specially, and then watching those that are on the different end, and intensely electronegative. a impressive compound to illustrate this may well be Cesium fluoride. Cesium is almost the main electropositive ingredient obtainable usually and fluorine is by rule the main electronegative ingredient. NaF is ionic, yet CsF is in basic terms a great way to illustrate it. Fluorine will "rip" electrons to style compounds with such violence, that it makes it very risky. it particularly is in basic terms nasty except you're a chemist or maybe then, we are nevertheless very careful. desire that regulate right into a sturdy answer. EDIT: i ought to have been extra complete and addressed covalent bonds, or long gone much extra into intensity and suggested that each and each bond has some attributes of an ionic bond and a few attributes of a covalent bond, however the bond style it particularly is maximum suited is used to grant the the substance a "nature" of ionic or covalent. I in simple terms drew from this question that the guy asking replace into watching classic ionic compounds and their nature.

Answer 4

c18 + d19 = 18.998
c+d = 1
c18+19-19c = 18.998
c(-1)=-0.002
so about 1/5% of the isotope is F-18 and the remaining 99 4/5% is F-19.

Answer 5

Clearly F-19 dear!