When placed inside of a magnetic field, NMR active nuclei act in what way?

a. They align with and against the applied magnetic field in a 1:1 ratio.
b. They align mostly in the opposite direction of the applied magnetic field.
c. They align mostly in the same direction as the applied magnetic field.
d. They randomly align.

it would be d. henry moseley

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answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.