20. A Geiger counter detects radiation Each click corresponds to_ nucleus/nuclei decaying. A four B. two C. three D. one

If you open the bottle of perfume then nothing but the smell will come out of it and yes it is a type of gas smell because it’s say it in english so i can understand better and you

The answer to the question is d

The answers is a nuclear changes

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts