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What happens to an atom when it gains or lose electrons it becomes an A?

An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion (see page 10 for more on ions).

What happens during beta decay?

Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. In beta minus decay, a neutron decays into a proton, an electron, and an antineutrino: n Æ p + e – +.

Do radioactive isotopes lose electrons?

When isotopes decay they can lose some of their atomic particles (i.e. electrons and protons) and turn from one element into another. An example of a radioactive chain is uranium-238. As it decays, it transforms through a number of elements including thorium, radium, francium, radon, polonium, and bismuth.

Do isotopes gain or lose electrons?

Isotopes are versions of a particular element that have different numbers of neutrons. Ions are atoms (or molecules) that have lost or gained electrons and have an electrical charge. Isotopes involve neutrons. For example, isotopes can lose or gain electrons to form ions.

Do all elements have isotopes?

All elements have isotopes. There are two main types of isotopes: stable and unstable (radioactive). There are 254 known stable isotopes. All artificial (lab-made) isotopes are unstable and therefore radioactive; scientists call them radioisotopes.

What element has the most isotopes?


Which is the most stable element?

Yes, iron or more precisely an isotope of iron know as iron-56 is the most stable element known. However, you might be confused and ask what about noble gases. As per the general notion, the noble gases are considered the most stable elements in the whole periodic table.

How do you find an isotope symbol?

To write the symbol for an isotope, place the atomic number as a subscript and the mass number (protons plus neutrons) as a superscript to the left of the atomic symbol.

What is the N P ratio for the heaviest stable isotopes?


Is Xenon 140 stable?

The isotopes 126Xe and 134Xe are also predicted to undergo double beta decay, but this has never been observed in these isotopes, so they are considered to be stable.

How can you tell if an isotope is radioactive?

An unstable isotope emits some kind of radiation, that is it is radioactive. A stable isotope is one that does not emit radiation, or, if it does its half-life is too long to have been measured. It is believed that the stability of the nucleus of an isotope is determined by the ratio of neutrons to protons.

What is meant by n P ratio?

The neutron–proton ratio (N/Z ratio or nuclear ratio) of an atomic nucleus is the ratio of its number of neutrons to its number of protons. This is because electrical repulsive forces between protons scale with distance differently than strong nuclear force attractions.

Which product of nuclear decay has mass but no charge?

Gamma rays

Which type of radiation is the most penetrating?

Which nuclear emission has the greatest penetrating power?

gamma particle

Can gamma rays be stopped by paper?

The penetrating power of alpha rays, beta rays, and gamma rays varies greatly. Beta particles pass through paper but are stopped by aluminum foil. Gamma rays are the most difficult to stop and require concrete, lead, or other heavy shielding to block them.

Which type of radiation is most dangerous to your cells?

What type of radiation can be stopped by aluminum?

gamma rays