Chapter 3 - Isotopic composition and accurate mass Flashcards
1
Q
How many elements have only 1 naturally occurring stable isotope?
A
20
2
Q
Most commonly used monoisotopic elements
A
fluorine
sodium
phosphorus
iodine
3
Q
Common X+1 elements
A
hydrogen
carbon
nitrogen
4
Q
Common X+2 elements
A
chlorine
bromine
5
Q
Nominal mass
A
the integer mass of an isotope’s most abundant naturally occurring stable isotope.
6
Q
What does “u” stand for
A
unified atomic mass (should always be used instead of amu)
