A 12-gram sample of Carbon-14 has approximately 6x102 atoms. Can you calculate how long it would take for all the atoms to "flip?

Answer

There are 21 atoms

Explanation:

multiple 6×102 = 621/12= 51

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.