What does a scientific law 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.

What can be found in the ionosphere

Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon