Question

please tell answer fast​

Answer 1

Answer:

The reason why we only see ~118 elements is because we only see the ones stable enough to observe. Anything common in nature would need to have a half-life comparable to the age of the earth (or be produced as a decay product of something else that does).

Answer 2

Answer:

the because 0.54 is the bigger number so you will get a opportunity to make it a correct answer so I would like to thank you