Anshika Sharma India 3k Questions 2k Answers 3 Best Answers 4k Points View Profile 0 Anshika Sharma Asked: May 7, 20202020-05-07T13:47:00+05:30 2020-05-07T13:47:00+05:30In: Education The existence of isotopes was discovered by? 0 The existence of isotopes was discovered by? gk Share Facebook 1 Answer Voted Oldest Recent Abhinav.arjun47 Moradabad, India 1k Questions 2k Answers 14 Best Answers 4k Points View Profile Abhinav.arjun47 Added an answer on May 7, 2020 at 1:50 pm The existence of isotopes was first suggested in 1913 by the radiochemist Frederick Soddy, based on studies of radioactive decay chains that indicated about 40 different species referred to as radioelements (i.e. radioactive elements) between uranium and lead, although the periodic table only allowed for 11 elements . 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Save my name, email, and website in this browser for the next time I comment.