Question

__________ gave the idea for the first time to classify elements as per their properties.

(a) Mendeleev

(b) Dobereiner

(c) Newland

(d) John

The question was posed to me by my school principal while I was bunking the class.

My doubt stems from Genesis of Periodic Classification in section Classification of Elements and Periodicity in Properties of Chemistry – Class 11

Answer 1

Correct choice is (b) Dobereiner

The explanation: In the early 1800s, a German chemist named Dobereiner came up with the idea of classifying elements as per their properties. LAter in 1829, he noticed a similarity in triads (a group of 3 elements). This is how he classified.