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The standard state, or reference state, of an element is defined as its thermodynamically most stable state at 1 bar at a given temperature (typically at 298.15 K). In thermochemistry, an element is defined to have an enthalpy of formation of zero in its standard state. For example, the reference state for carbon is graphite, because it is more stable than the other allotropes.
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Which element is a stable element?
A stable element is any non-radioactive element. All elements before element atomic number 84 (not including 84) - Polonium (Po) are stable elements.
What is the largest natural stable element?
Bismuth Francium has the largest atom - the greatest atomic radius.
The Physical state of astatine?
Astatine is a halogen element that exists as a solid at room temperature. It is a very rare and radioactive element, with a half-life of only a few hours for its most stable isotopes.
Cerium is stable in 4 oxidation state?
Cerium is known to exist in the +3 and +4 oxidation states. In its +4 oxidation state, cerium is relatively stable due to its half-filled f-orbital, which provides additional stability. This makes cerium a unique element as most lanthanides almost exclusively exhibit a +3 oxidation state.
What is the highest valency element?
The highest valency element is oxygen, with a valency of 2. The valency of an element represents the number of bonds it can form with other elements. Oxygen typically forms bonds by gaining two electrons to achieve a stable electron configuration.
What is the form of a element that is progressing toward a more stable state by emitting radiation is called?
The process of an element progressing toward a more stable state by emitting radiation is called radioactive decay. This results in the emission of energy or particles from the unstable nucleus in order to achieve a more balanced and stable state.
Which of the elements is 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
Which element is a stable element?
A stable element is any non-radioactive element. All elements before element atomic number 84 (not including 84) - Polonium (Po) are stable elements.
How does an atom of a representative element achieve its most stable state?
The valence shell must be completed to eight electrons.
Is element fluorine stable?
Fluorine is a stable element.yes.
Is helium stable or unstable?
Helium is a stable element.
When an element has the same number of protons and electrons the element is a?
the element is stable.
Is oxygen chemically stable?
it's stable, but it is a reactive element!
Is cobalt a stable element?
No its not.
What is an element that is stable?
argon
Are iron elements stable?
Iron is an element, and there is only one element called iron (Fe). There are no iron element(s), but if you mean isotopes, then some iron isotopes are stable, and some aren't. No known element is stable in of it's isotopes.
Is the element dangerous on its own or is it generally stable?
it depends on which element
