Which of the following elements has the smallest first ionization energy? A) S
B) O
C) Si
D) Sr
E) Cs

Which diagram represents the phase tha occurs after a solid melts?

An unsaturated hydrocarbon is a hydrogen-carbon compound with a. a network solid structure b. single bonds c. single bonds in a branched-chain structure d. double or triple bonds

In the diagram here that represents the reaction, which reactant, a or b, is the limiting reagent?