Is a chlorine atom larger than a bromine?

Chlorine is in 3rd period and 17th group

bromine is in 4th period and 17th group.

The number of shells present in an atom is equal to the period no. In which it is present.

So, chlorine has 3 shells while bromine has 4 shells.

And atomis size is the distance between centre of nucleus and outermost shell.

So, bromine atom is larger than bromine atom..