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Why are most elements radioactive?
Most of the natural occurring (isotopes of) elements are NOT radioactive.Though most of all the known isotopes are radioactive but most of them do NOT naturally occur.
What are facts about protactinium?
it's radioactive, and is one of the rarest and most expensive naturally occurring elements. It costs 280$ per gram. It is of the actinide series; which means "radioactive rare earth", so it's related to other really cool elements like plutonium.
What is the most radioactive place on earth?
The most radioactive room in the world is the Infinity Room, found in the former Rocky Flats area, (Colorado) the room was (is) so radioactive that it was impossible to measure with any technology, hence the name "Infinity Room." Since the government didn't want ten foot tall deer and coyotes with two heads they poured cement into the underground wasteland sealing it off from the rest of the world. This room became so radioactive because there was a fire that took place in the Infinity room that caused a Uranium spill, it made the room so radioactive that not only could they measure it, they couldn't even walk inside it even with the strongest radioactive suits.
Why is astatine is the rarest element on the earth?
Astatine is the rarest naturally occuring element on Earth because all its isotopes are radioactive with very short half-lives. The most stable, At-210 has a half-life of 8 hours, so any astatine that forms (by radioactive decay of heavier elements) quickly decays to other elements.
Does earth have radioactive internal energy and external energy?
Earth has internal energy due to radioactivity. I am not sure what you mean by radioactive external energy, or simply by external energy. Earth gets most of its energy from the Sun.
Radon is the most heaviest naturally radioactive what?
Radon is one of the noble (inert gases), is radioactive (half-life of about 4 days, decaying to polonium), and is naturally occurring in relatively small quantities. Whether or not it is the heaviest of this group, I am not sure...perhaps someone else can verify.
Do most actinides occur naturally in the earth's crust?
Yes
Are most of the actinides occur naturally in earth's crust?
no they do not
Which place are most naturally attractive in Asia?
singapore
How is it that the core of the earth is terribly hot?
Most of the heat comes from radioactive particles decomposing
What are the atomic numbers 81-100?
Elements 89-100 are the Actinide series of elements, most of which are radioactive, and some of which can only be made artificially. Elements 81-88 are also likely to be radioactive, but are naturally occurring.
Which Of the main types of radiation emitted from naturally radioactive isotopes which is the most penetrating?
In descending order of penetration:-gamma rays.neutrons.beta particles.alpha particles.
