Notes
Eka-hafnium…
Eka-hafnium is a radioactive synthetic element whose longest-lived isotopes haved mass numbers 253, 255, 257 and 259 with half-lives of 1.8, 1.6, 4.7 and 3.4 seconds.
Subscribe to our youtube channel!
Staying up to date on Question/Notes related to General knowledge, current affairs and are useful in Academic and Government Exams. More than 8000 video on our channel.
Subscribe