How does chemistry contribute to energy research

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

50 pts plz what is the physical state of matter of baking soda.

If a solution had a ph of 7 what is the solution