Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. What is the most likely identity of element X?

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Which element would mostly likely have an electron affinity measuring closest to zero

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?