What did henry moseley determine that contributed to understanding the atom?

Henry Moseley is a Physicist. He used x-rays and discovered the atomic number of each element, that led to more accurate organization of the periodic table.

He arranged the elements in the periodic table by the number of protons of the elements not on the basis of atomic weights of the elements.

This disappeared the the flaws in the periodic table that had been making scientists uncomfortable.

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

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question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

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(jacemorris04)