Consider the two electron arrangements for neutral atoms A and B. What is the atomic number of A? A - 152, 252, 2p5, 35
B - 152, 252, 2p6.5s!

150.0 grams of asf3 were reacted with 180.0 g of ccl4 to produce ascl3 and ccl2f2. if the actual yield of ccl2f2 was 127 g, what is the percent yield?

Find the mass in grams of 1.37x1020 particles of h3po4

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.