In 1869, who is credited with publishing the first widely recognized version of the periodic table?

Correct option is B

The correct answer is (b) Dmitri Mendeleev
Explanation:
• In 1869, Dmitri Mendeleev published the first widely accepted periodic table.
• He arranged elements by increasing atomic mass and similar chemical properties.
• Mendeleev left gaps for undiscovered elements and correctly predicted their properties.
• His table laid the foundation for the modern periodic law.
• Mendeleev is regarded as the father of the periodic table.
Information Booster:
• Modern periodic table arranges elements by atomic number, not mass.
• Döbereiner and Newlands contributed earlier concepts like triads and law of octaves.
Additional Knowledge:
(a) Newlands – Law of Octaves (1864).
(c) Döbereiner – Triads.
(d) Lothar Meyer – Similar work but published later.