An entire group of elements was unknown when the periodic table was first developed because they were unreactive and no known compounds were composed of them.

What most likely led to the inclusion of these elements in the periodic table?

the formation of a compound in the laboratory

new technology that showed how to identify one of the elements

improvements in instruments to measure small masses

more careful experiments to create synthetic elements

Question

Chemistry

Ashlyn Waller

19 March, 23:27

An entire group of elements was unknown when the periodic table was first developed because they were unreactive and no known compounds were composed of them.

What most likely led to the inclusion of these elements in the periodic table?

the formation of a compound in the laboratory

new technology that showed how to identify one of the elements

improvements in instruments to measure small masses

more careful experiments to create synthetic elements

+4

Answers (1)

Know the Answer?

Gael Gallagher · Answer 1

The correct option is B.

The noble gases are the last set of elements to be discovered because of their inert nature. The noble gases where eventually discovered when Sir Williams Ramsay discovered that neon is part of the elements that made up the air. He later went ahead to discover the other noble gases.