Write the isotope notation for an element with 12 protons and 14 neutrons.

An observation that requires measurement is called quantitative observable or qualitative

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

Find the mass, in grams, of 5.00*10^23 molecules of f2