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Promethium (61), technetium (43), and all others above 92 on the Periodic Table. Almost all isotopes of all atoms are also unstable.
What else can I help you with?
Which would you most expect to be an unstable atom?
An atom with an excess number of protons or neutrons relative to the number of electrons is more likely to be unstable. Additionally, atoms with a high atomic number (number of protons) tend to be less stable due to increased electromagnetic repulsion between the protons.
What word means unstable elements that decay?
The word Radioactive usually denotes a substance containing unstable atomic nuclei.
What has a Very unstable plus - or zero charge?
An atom with a very unstable charge, whether positive, negative, or neutral (zero charge), typically refers to certain isotopes or ions that are highly reactive. For instance, free radicals possess unpaired electrons, making them unstable and likely to react with other molecules to achieve stability. Additionally, certain radioactive isotopes can exhibit unstable behavior due to their tendency to decay and emit radiation. Thus, any species that does not have a stable electron configuration is considered unstable.
What is the smallest particle of any substance that has basic unit of matter?
atom is d smaalest particle made up of neutron,proton n electron....
What atomic nucleus contains 11 protons?
11. The atomic number of any atom equals the number of protons in the atom.
What is a zincin?
A zincin is any of a group of metalloproteases containing a zinc atom.
What is a zirconocene?
A zirconocene is any of a class of metallocenes, containing a zirconium atom.
Which would you most expect to be an unstable atom?
An atom with an excess number of protons or neutrons relative to the number of electrons is more likely to be unstable. Additionally, atoms with a high atomic number (number of protons) tend to be less stable due to increased electromagnetic repulsion between the protons.
Why inner shells of atom are called kernel?
The correct term is nucleus, situated in the center of any atom and containing protons and neutrons.
What happens to the reactivity of any atom or ion that acquires the same electronic structure as an inert gas?
any atom that has or acquires a valence shell containing exactly eight electrons often is or becomes quite inert.
What is the simpest atom?
The simplest atom would arguable be hydrogen, containing just one proton and one electron. There are other hydrogen atoms, known as isotopes, all of which contain nuetrons. Hydrogen 1 is known as protium, or normal hydrogen. H-2 is dueterium with one proton, one nuetron and one electron. H-3 is tritium. Any isotopes above H-3 are highly unstable and exist for fractions of a second.
What word means unstable elements that decay?
The word Radioactive usually denotes a substance containing unstable atomic nuclei.
What is an example of unstable atom?
Any of the noble gases (in the right-most column of the periodic table): helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) radon (Rn), and Hydrogen.They all have what is called a stable "octet."See the Related Questions for more information on what the octet rule in chemistry is.
What is an arsinine?
An arsinine is any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an arsenic atom - the simplest example being C5H5As.
What has a Very unstable plus - or zero charge?
An atom with a very unstable charge, whether positive, negative, or neutral (zero charge), typically refers to certain isotopes or ions that are highly reactive. For instance, free radicals possess unpaired electrons, making them unstable and likely to react with other molecules to achieve stability. Additionally, certain radioactive isotopes can exhibit unstable behavior due to their tendency to decay and emit radiation. Thus, any species that does not have a stable electron configuration is considered unstable.
How positive and negative attract?
Think about it in science. If you had any atom with only positive charges or just negative charges it is an unstable atom, therfore you can't make anything out of it. They attract like puzzle pieces. To stabalize an object you need an equal amount of positive and negative charges.
What is the smallest particle of any substance that has basic unit of matter?
atom is d smaalest particle made up of neutron,proton n electron....
