they are all an energy particle
True but no one know Exactly how many stars there are
Make a fizzing volcano with facts and pictures of a volcano
Answer:
I am a grade six student but I am very interested in chemistry
Explanation:
I sorry but this is NOT chemistry
The correct option is B.
Mendeleev was the one who originated the idea of arranging elements in the periodic table according to their chemical and physical properties. He left spaces in the periodic table and predicted the discovery of those elements that had not been discovered then. One of these elements is Gallium. He predicted that gallium is going to be a metal and he gave the properties that the element will possess. He also predicted that the element gallium will be placed under aluminium in the periodic table.