Simiralities of bohr's atomic model and rutherford's atomic model?

Bohr also said it but in a slightly modified way.

He said that the orbits could have only certain fixed sizes depending on their allowed energies.

In an address to the Physical Society of Copenhagen, Bohr stated,

Bohr introduced the concept of electron shells.

Bohr did not prove that Rutherford was wrong. Rather, he improved and extended the Rutherford model.

There were two drawbacks to the Rutherford model.

Bohr's model is a defined, expanded model of Rutherford's atom that overcomes these two drawbacks.

The basics are the same, i.e., electrons revolve around the nucleus in paths called orbits with the nucleus at the centre.

Bohr expanded on Rutherford's model in detail.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.