Question

who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
john dalton
dmitri mendeleev
antoine lavoisier
henry moseley

Explanation:

• John Dalton: Proposed atomic theory, not arranging elements by atomic mass for predicting missing elements.
• Dmitri Mendeleev: Arranged elements by atomic mass and predicted properties of missing elements in his periodic table.
• Antoine Lavoisier: Known for contributions to chemistry like naming oxygen, not this element - arranging work.
• Henry Moseley: Arranged elements by atomic number, not atomic mass as per question.

Answer:

Dmitri Mendeleev