What element has 4 energy levels and 8 valence electrons?

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

Which compound contain an iron with a 3+ charge

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2