Please help me with this question
Attachments:
Answers
Answered by
1
Answer:
it means first column rule name secod in which rule what is doing and in thired column scientist named who introduceduce this rules
Answered by
4
Answer:
column 1 column 2 column 3
1. electron: lightest and negatively charged particle in the atom. J. J. Thomson
2. nucleus: positive charge and concentrated mass Ernest Rutherford
3. period: sequential change in molecular formula Dmitri Mendeleev
4. atomic mass: positive charge in nucleus Moseley
5. octave: properties of eighth element similar to the first Dobereiner
6. triad: average of first and third atomic mass newlands
Explanation:
Similar questions