Chemistry- The Periodic Table

How many elements were discovered by the 1700s

chemists could not isolate elements from their compounds in the 1700s

• true

• false

Although each scientist used different ways to arrange elements, they all used ________ in the __________ of elements as a basis

the periodic table organizes elements by their

A German scientist who contributed to the periodic table

An English scientist who contributed to the development of the periodic table

A Russian chemist who contributed to the development of the periodic table

dobereiner made

Newlands published the law of _______

Describe Newlands' version of the periodic table. What mistake did he make?

Answer explanation

Newlands' octaves were ordered by atomic weight. He proposed the law of octaves, stating that every 8th element had similar properties to the first. He did not account for elements that were not yet discovered.