What are the requirements of any hypothesis in science?

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

Predict the products butane (c4h10) + oxygen —>

How many molecules are found in 1.32 mol of nacl?