instruction:
In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
question:
The atomic radius of a chemical element is a measure of the size of its atoms , usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons .
answer:
The atomic radius of an element is the distance between the nucleus and the edge of the electron cloud .

question:
The scoring team then attempts a try or conversion , more commonly known as the point ( s ) -after-touchdown ( PAT ) , which is a single scoring opportunity .
answer:
After a touchdown , the scoring team attempts a try for 1 or 2 points ( see below ) .

question:
He was traded back to the Hamilton Tigers before the start of the 1921 22 season , playing parts of two season there before another trade in 1923 sent him to the Saskatoon Sheiks of the West Coast Hockey League .
answer:
He was traded to Hamilton for the 1921-22 season and traded from Hamilton to Saskatoon of the West Coast Hockey League in 1922 .