What is the wavelength of the photon emitted when an electron in a hydrogen atom makes a transition from the n

What happens to isotopes that are unstable?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

What is true for a substance that releases energy