I agree because when u have confidence , ur more strong
10000 I believe that is the answer
Answer:
That makes 21
Whats your question?
What do you need help on?
I took algebra a while ago so I may be able to help you.
Explanation:
What?????????? what book????
Lavoisier organized a list of the known
elements of his day as four categories.
Newlands was the first to organize the
elements and show that properties repeated in a periodic way. Mendeleev and Meyer proposed periodic tables showing a relationship between atomic mass and elemental properties. Moseley organized the elements by atomic number instead of atomic mass.