(15 points)consider the physical properties (such as size, magnetism, ability to boil or dissolve in water) of each sand, gravel, salt and iron filings. how would you go about separating the components of a mixture of them?

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.