Answer:
There was a wide variety of change that an atomic models Saw from time to time. Since it was defined as subatomic centre being heavy suggesting atomic nucleus.
Step-by-step explanation:
Starting with history suggested Dalton whose story suggested that every particle had a certain building block known as atom was for the modified by Thomson. He was plum pudding model was famous in which negatively charged was said to be embedded inside.
A positively charged pudding this theory was contradicted by Rutherford whose model suggested by gold leaf experimentation Which told about subatomic centre being heavy suggesting atomic nucleus.