How did Mendeleev come up with the first periodic table of elements?(1 point)%0D%0AResponses%0D%0A%0D%0AHe organized the elements by their atomic number.%0D%0AHe organized the elements by their atomic number.%0D%0A%0D%0AHe determined the mass of atoms of each element.%0D%0AHe determined the mass of atoms of each element.%0D%0A%0D%0AHe estimated the number of electrons in atoms of each element.%0D%0AHe estimated the number of electrons in atoms of each element.%0D%0A%0D%0AHe arranged the elements by different properties to find a pattern.

Answer 1

He arranged the elements by different properties to find a pattern.