Question

who invented the formula for determining mass number ​

Answer 1

Answer:

Here's Your Answer

Explanation:

As a part of his research on atoms, John Dalton determined a number of atomic weights of elements in the early 1800's. Atomic weights were the basis for the periodic table that Mendeleev developed.

Answer 2

Answer:

History of Atomic Weight Determinations

As a part of his research on atoms, John Dalton determined a number of atomic weights of elements in the early 1800's. Atomic weights were the basis for the periodic table that Mendeleev developed.