0
To name a few… Tc - Technetium (43), Pm - Promethium (61), Np - Neptunium (93), Pu - Plutonium (94), Am - Americum (95), Cm - Curium (96), Bk- Berkelium (97), Cf - Californium (98), Es - Einsteinium (99), Fm - Fermium (100) atomic numbers: 43, 61, 93-112, & 114 all have no stable forms These elements are (man-made,) marked on the Periodic Table as "Not found in Nature"
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Are there any elements with no stable forms?
Many of the elements with higher atomic numbers have no stable form yet discovered, ex: ununoctium.
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.
Will there be any stable elements above the elements currently on the periodic table If yes is it just a matter of adding P - N - E to a current atom?
Probably not. As of 2013, the last known element is #118. It is possible that additional elements will be discovered after that one. The heaviest stable element is lead, element #82. It is unlikely that any heavier element will be stable. In general, the tendency is for heavier elements to be less stable.
What family does not form any bonds because it is stable?
noble elements
How is noble gas stable?
It won't react with any of the other elements.
What are the first 5 elements by atomic number for which all isotopes are radioactive?
43 Technetium, and 61 Promethium have no stable isotopes. All elements starting at 83 Bismuth have only radioactive isotopes; though Bismuth-209 has such a long half-life that it can be considered stable for any practical purpose.
What is a bioconjugate?
A bioconjugation is any reaction which forms a stable covalent link between two biomolecules.
Symbolism of a dragon?
the dragon - symbolism of 'the master of all elements'. Can take many forms and can be victorious in any circumstance.
Which alkali metal element has no stable isotopes?
Elements with no stable isotopes include technetium (element 43) and promethium (element 61) and all elements heavier than lead (elements 83 and higher). Bismuth, element 83, is virtually stable with an extremely long half life of 1.9 x 1019 years.
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.
What is the part of the periodic table that has elements that do not chemically react?
All of them tend not to react with each other until you get lower down the group
Which a property shared by all of the elements in group 18 on the periodic table?
They have an octet of outer electrons, so they are stable. They do not tend to form any compounds.
