EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This scientist classified elements according to certain groups such as gases, non-metals, metals and metal oxides.
A
Johann W. Dobereiner
B
Antoine Lavoisier
C
John Newlands
D
Lothar Meyer
Explanation: 

Detailed explanation-1: -The earliest attempt to classify the elements was in 1789, when Antoine Lavoisier grouped the elements based on their properties into gases, non-metals, metals and earths.

Detailed explanation-2: -Antoine-Laurent Lavoisier, a meticulous experimenter, revolutionized chemistry. He established the law of conservation of mass, determined that combustion and respiration are caused by chemical reactions with what he named “oxygen, ” and helped systematize chemical nomenclature, among many other accomplishments.

Detailed explanation-3: -In 1869, Russian chemist Dmitri Mendeleev created the framework that became the modern periodic table, leaving gaps for elements that were yet to be discovered. While arranging the elements according to their atomic weight, if he found that they did not fit into the group he would rearrange them.

Detailed explanation-4: -As we are already aware that Antoine Lavoisier first classified the elements into different categories based on their chemical and physical properties. These categories of elements include metals, nonmetals and metalloids and noble gases.

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