In living things what is the source of the carbon-14 that is used in radiocarbon dating

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

I’m an electrically neutral atomic any element, there are equal numbers of

What is the work done by the electric force to move a 1 c charge from a to b?