Henry moseley studied x-ray spectra of several elements in a row of periodic table. he found that each element had one more proton than the element immediately to its left. which statement best describes moseley's contribution to the modern periodic table?
a. recognizing that elements in the periodic table have similar properties
b. arranging elements in the periodic table based on their properties
c. predicting the properties of missing several elements in the periodic table
d. providing a basis for ordering elements in the periodic table