0
Verified answer
Ra and Ac
Pu and Th
Am and U
Wiki User
∙ 13y ago
Anonymous
gabbietiger
APEX: Am and U
Anonymous
Wiki User
∙ 9y agoAll elements with stable isotopes can have unstable isotopes, either natural or synthetic. Unstable isotopes will decay into other isotopes, which themselves may be unstable.
The elements technetium (53) and promethium (61) have no stable isotopes.
All elements heavier than lead (element 82) are radioactive, because their large nuclei are inherently unstable. They will change over time into nuclei with fewer protons (change into other elements). For some elements this takes an extremely long time. Only a tiny percentage of bismuth-209 has decayed since the beginning of the universe (it has a half-life of 19 billion billion years).
Wiki User
∙ 7y agoAll elements are radioactive to some extent, though with an extremely large half life.
The radioactive elements (with the shorter half lives) tend to be the heavier elements.
Wiki User
∙ 14y agoThe ones that are naturally unstable such as plutonium or francium.
Wiki User
∙ 12y agoAny element greater in atomic number than lead, and any element with a non-stable ratio of neutrons and protons.
Wiki User
∙ 10y agoEXAMPLES ARE: uranium, thorium, actinium, protactinium, plutonium, radon, technetium, promethium etc.
Dalila Aguilar
Pu and Th (APEX)
Which of these elements tend to be radioactive Am Ne K and U?
Am (Americium) and U (Uranium) both radio active. Ne (Neon) is an inert/noble gas. K (Potassium - latin ;Kalium) is not radioactive.
What types of elements are useful for dating materials?
Radioactive elements are used to date the age of rocks. Radioactive elements decay according to a known pattern. Scientists can use the elements of that pattern to determine when the rock with the original radioactive element was formed.
What are radioactive elements on the periodic table?
In general, the elements with higher atomic numbers are the most radioactive and they are found at the bottom of the Periodic Table of Elements
What characterizes a radioactive element?
As radioactive element is an element that is on the Priodic Table of Elements. A Radioactive Element is usually radioactive.
What 3 families contain no radioactive elements?
All periodic table groups contain elements with radioactive isotopes.
What elements tend to be radioactive?
Pu Th
Synthetic elements comprise a majority of which of the following groups?
Artifficial radioactive elements are situated in: - period 7 - actinoids (actinides) family
Radioactive elements comprise a majority?
Yes. Stable elements are 83 elements. all elements above that of atomic number 83 (Bismuth) are radioactive. Radioactive isotopes are of the order of 1500 radioactive isotope.
Which of these elements tend to be radioactive Am Ne K and U?
Am (Americium) and U (Uranium) both radio active. Ne (Neon) is an inert/noble gas. K (Potassium - latin ;Kalium) is not radioactive.
Do trace elements have to be radioactive?
No, trace elements are not necessarily radioactive. A link to a list of elements that have no natural radioactive isotopes is at a related question, below.
What made up all radioactive elements?
After disintegration all radioactive elements are transformed in other elements.
Are all transition elements are radioactive?
Not all of the transition elements are radioactive. Many of them are, and some of them have common radioactive isotopes, but some of them have no naturally occurring radioactive isotopes. Please note that all elements have synthetic radioactive isotopes, at least.
The pressure and heat that produces magma are caused in part by?
Radioactive elements
What families have no radioactive elements?
Radioactive elements exist in all groups of the periodic table.
What element family have no radioactive elements?
Radioactive elements exist in all groups of the periodic table.
What elements are radioactive?
Answerelements with a nonstable isotope or at least one naturally occurring isotope that is radioactive. AnswerAll elements have radioactive isotopes.There are a lot of radioactive elements: Technetium, Promethium, Polonium, Astatine, Radon, Francium...Here is the whole list: http://periodictable.com/Elements/Radioactive
Can one element change into a different element?
Yes, but only if it is radioactive. Radioactive elements change into different elements through radioactive decay.
