All elements above the atomic number of 83 are radioactive, but two elements that are under it are also radioactive. They are technetium (atomic number 43) and promethium (atomic number 61). Radioactive elements are elements that decay until stable. =)
An chemical element cannot loss a chemical element. Probable you think to the last member of a radioactive decay chain.
argon
This is usually part of the bonding process called ionic bonding.
The lightest element on the periodic table with no stable isotopes is hydrogen. It only has one proton in its nucleus and no stable isotopes.
because calcium is a group 2 element which makes it a metal an oxygen is a group 6 element which makes it a a nonmetal. calcium have to lose 2 electrons to become iso-electronic to neon (to become stable) and oxygen need two electron's to become iso-electronic to neon as well (to become stable) calcium transfer its 2 electrons to oxygen its will become stable and so will oxygen. because this type of bonding took place between a metal an a nonmetal its refers to as a ionic bonding and the compound which form as a result of this type of bonding is known as a ionic compound
Being radioactive, uranium is not a stable element.
Beryllium is a stable element.
Nothing. Krypton is already just about as stable as it's possible for an element to get.
Not always -- Hydrogen-3 is radioactive, for example.
An element that needs three electrons to become stable is nitrogen. Nitrogen has five valence electrons and can gain three more electrons to achieve a full outer shell of eight electrons, making it stable.
A chlorine atom needs one additional electron in order to become stable.
a stable element is an element which have been able to complet its octect rule, i.e the electron of its outermost shell is complet, this is what is called a stable element
An element will radiate if it is an isotope of the original element, this means that it has more neutrons in its nucleus than it does protons. This causes the element to become unstable and thus causes it to let out radiation in order to make it stable.
A stable element is any non-radioactive element. All elements before element atomic number 84 (not including 84) - Polonium (Po) are stable elements.
An chemical element cannot loss a chemical element. Probable you think to the last member of a radioactive decay chain.
Fluorine is a stable element.yes.
Helium is a stable element.