Chadwick did!
Hope this helps!
gravitational force, low tide
Answer: noble gases are in reactive.
Explanation: noble gases are present in the right most corner of the periodic table in the 8th group. So their outermost shells are complete. Their boiling point, mass increases down the group. the have strong forces of interaction. their ionization energy decreases down the group
Answer: I believe it's litmus paper
Explanation:
