Radium
Rutherfordium is not found in nature. It is a radioactive synthetic element.
Meitnerium is a synthetic radioactive element. It is not found in nature.
The radioactive element that begins with the letter R is radium. Radium is a highly radioactive element and is found in uranium ores. It emits alpha, beta, and gamma radiation.
No. It is a highly unstable element and it is radioactive.
Yes
non radioactive element
Yes, nobelium is radioactive. It is a synthetic element that does not occur naturally and is produced in laboratory settings. All isotopes of nobelium are radioactive and have short half-lives, making them highly unstable.
Thorium, an element rarely found in some minerals.
yeah! almost all radioactive materials are dangerous, from these material radioactive rays are originated which are namely alpha,beta,gamma and when these rays strike to the body so it leave incurable burn,however its small amount is also harmful such as: the radioactive material named radium are found in varieties of wrist watches so its also harmful for human health X-Rays are electromagnetic rays and these are also harmful but not so much therefore physicians avoids for X-rays reports but in severe condition they are compel to do that advise There are two type of radioactive element one is natural radioactive and other is artificial radioactive element From natural radioactive element radioactive rays are always originated so,radioactive materials are dangerous even it is artificial or natural
Radium is an element; it has no sub-parts. Radium is a radioactive element, so it will slowly and spontaneously decay into other elements.
Thorium is a natural chemical element, a radioactive metal.
A radioactive element is one that discharges radiation. Uranium is a radioactive element. A radioactive element is very dangerous if you don't have protective clothing. You should never go near a radioactive element.