How to balance this and the correct answer

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

Which suspect most likely committed the robbery and how do you know

How many grams of mgbr2 are needed to produce 75g or metal?