They are in the same period (horizontal)
Answer:
a. Change of state
Explanation:
Because you will see that the state has changed
Lanthanide belongs to period 6, and actinides belongs to period 7
Answer: D. test tubes, thermometers, etc
I think this is the correct answer. Sorry if it is not.
Explanation:
I think kepler would be the one to best describe the motion of hte earth because he has a space telescope named after him