Question

who is credited with creating the first periodic table?
○ johann dobereiner
○ henry moseley
○ dmitri mendeleev
○ john newlands

Explanation:

Dmitri Mendeleev is credited with creating the first periodic table by organizing elements based on atomic mass and predicting properties of undiscovered elements. Johann Dobereiner developed triads, Henry Moseley refined the table using atomic number, and John Newlands proposed the law of octaves, but Mendeleev's work is most associated with the first periodic table.

Answer:

C. Dmitri Mendeleev