What element is present after the beta decay of strontium 90?

Strontium- 90 decays to yttrium-90, which in turn decays to stable zirconium. The isotopes of strontium and yttrium emit beta particles as they decay.

What is the product of the beta decay of strontium-90?


Strontium-90 decays to yttrium-90 by emitting a beta particle, and yttrium-90 decays by emitting a more energetic beta particle with a half-life of 64 hours to zirconium-90. The main health concerns for strontium-90 are related to the energetic beta particle from yttrium-90. produced by nuclear fission.

What happens when strontium undergoes beta decay?

Sr undergoes β decay with a half-life of 28.79 years and a decay energy of 0.546 MeV distributed to an electron, an antineutrino, and the yttrium isotope 90Y, which in turn undergoes β decay with a half-life of 64 hours and a decay energy of 2.28 MeV distributed to an electron, an antineutrino, and 90Zr (zirconium), …

What is the symbol for the element produced when strontium-90 undergoes beta decay?

Strontium-90 Decay Chain

As 90Sr decays, it forms 90Y or Yttrium-90 which has a half life of 64 hours. The 90Y decay results into a stable substance called Zirconium (Zr).

Which element is replaced by strontium-90 in bones?


…and long-lived radioactive isotopes, notably strontium-90, which can replace calcium in foods and become concentrated in bones and teeth.

How is strontium-90 produced?

Strontium-90 is produced commercially through nuclear fission. Fissioning that occurs without any outside cause is called “spontaneous fission.” for use in medicine and industry. It also is found in the environment from nuclear testing that occurred in the 1950s and 1960s as well in nuclear reactor waste.

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What is beta decay equation?

The β decay equation is AZXN→AZ+1YN−1+β−+¯νe Z A X N → Z + 1 A Y N − 1 + β − + ν ¯ e .

Does beta decay change the element?

Since an atom gains a proton during beta-minus decay, it changes from one element to another. For example, after undergoing beta-minus decay, an atom of carbon (with 6 protons) becomes an atom of nitrogen (with 7 protons).

How do you find the beta decay of an element?

I can take the number of protons. And subtract it from mass. Number that's going to give me eight for the number of neutrons.

What element goes through beta decay?

Beta Decay

Carbon is carbon because it has an atomic number of 6, while nitrogen is nitrogen because it has atomic number 7. That means that a reaction that changes the number of protons in the nucleus changes what element we actually consider the nucleus to be.

Why does strontium-90 decay?

Sr-90 decays to yttrium 90 (Y-90), which in turn decays by beta radiation so that wherever Sr-90 is present Y-90 is also present. Because of the beta radiation, Y-90 poses a risk of burns to the eyes and on the skin from external exposure.

Where is strontium-90 found?

nuclear reactors

Where can strontium-90 be found and how is it used? Strontium-90 is found in spent fuel rods in nuclear reactors and is considered a waste product. It is found almost everywhere in small amounts, due to past nuclear accidents and fallout from nuclear explosions.

What type of radiation is strontium-90?

beta radiation

It emits only beta radiation with a short range, which makes it harmful if swallowed or inhaled. In this case, it may be the source of bone cancers and leukaemias if the spinal cord is involved. In food, milk and calcium-rich cheese favour strontium.

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What is this the isotope which undergoes beta decay to form 87Sr?

The element we will consider in this exercise is Rubidium-87 (87Rb), which undergoes radioactive decay to become Strontium-87 (87Sr).

How many protons does strontium-90 have?

38 protons

(b) The atomic number of strontium is 38. Thus, all atoms of this element have 38 protons and 38 electrons. The strontium-90 isotope has 90 – 38 = 52 neutrons.

What is the charge of strontium-90?


Strontium cation Sr-90 | Sr+2 – PubChem.

What is the mass number of strontium-90?


PubChem CID 5486204
Structure Find Similar Structures
Molecular Formula Sr
Synonyms Strontium-90 UNII-5TZZ77Z4ER 10098-97-2 5TZZ77Z4ER Strontium, isotope of mass 90 More…
Molecular Weight 89.90773

What type of element is strontium?

alkaline-earth metals

strontium (Sr), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is used as an ingredient in red signal flares and phosphors and is the principal health hazard in radioactive fallout.

What compounds does strontium form?

Two strontium compounds, strontium carbonate (SrCO3) and strontium nitrate (Sr(NO3)2), burn with a bright, red flame and are used in fireworks and signal flares. Strontium carbonate is also used to make certain kinds of glass and is the base material for making most other strontium compounds.

How is strontium found?

Strontium is found mainly in the minerals celestite and strontianite. China is now the leading producer of strontium. Strontium metal can be prepared by electrolysis of the molten strontium chloride and potassium chloride, or by reducing strontium oxide with aluminium in a vacuum.

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What is the first element in the lanthanide series?


Lanthanum is the first element of the lanthanide series has.

Is strontium a main group element?

The alkaline-earth metals—beryllium, magnesium, calcium, strontium, barium, and radium—occur in Group 2 in the periodic table (Figure I. 1). Beryllium is a relatively rare element but occurs as localized surface deposits in the mineral beryl (Figure I. 2).