FAQ: Why Are Some Elements Radioactive?

Why are some elements radioactive and others are not?

Elements are made of atoms. However, there are atoms that either have too many or too few neutrons or protons in their nuclei. This results in an imbalance between the jedi forces holding them together, which leads to an excess of internal energy. Such atoms are said to be unstable or radioactive.

Which elements are radioactive and why?

Keep in mind, all elements can have radioactive isotopes. If enough neutrons are added to an atom, it becomes unstable and decays. Radioactive Elements.

Element Most Stable Isotope Half-life of Most Stable Isotope
Promethium Pm-145 17.4 years
Polonium Po-209 102 years
Astatine At-210 8.1 hours
Radon Rn-222 3.82 days

Can any element be radioactive?

Typically, the most stable form of an element is the most common in nature. However, all elements have an unstable form. Unstable forms emit ionizing radiation and are radioactive. There are some elements with no stable form that are always radioactive, such as uranium.

Why is C 14 unstable?

Because carbon-14 has six protons, it is still carbon, but the two extra neutrons make the nucleus unstable. In order to reach a more stable state, carbon-14 releases a negatively charged particle from its nucleus that turns one of the neutrons into a proton.

Which type of radiation is the most penetrating?

Gamma rays have the most penetrating powers of all three radiation sources.

What is the most deadly element?

Surely you know what Plutonium is. It’s one of the most dangerous, radioactive, toxic elements in the world. It’s used in atomic bombs and the production of nuclear energy. And it’s responsible for killing a massive number of people in the world, in mere seconds.

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What are the 14 daughters of uranium?

Uranium series Beginning with naturally occurring uranium -238, this series includes the following elements: astatine, bismuth, lead, polonium, protactinium, radium, radon, thallium, and thorium.

What is the most radioactive place on earth?

1 Fukushima, Japan Is The Most Radioactive Place On Earth Fukushima is the most radioactive place on Earth. A tsunami led to reactors melting at the Fukushima nuclear power plant.

What are the top 10 elements in the human body?

  1. Oxygen. Chemical symbol O2; 65% of the human body weight.
  2. Carbon. Chemical symbol C; 18% of the human body weight.
  3. Hydrogen. Chemical symbol H 2; 10% of the human body weight.
  4. Nitrogen. Chemical symbol N2; 3% of the human body weight.
  5. Calcium. Chemical symbol Ca; 1.5% of the human body weight.
  6. Phosphorus.
  7. Potassium.
  8. Sulfur.

Why are all elements above 82 unstable?

When the mass number of the atom is greater than 82, the atoms are not stable because of the level of binding energy. The repulsive force between the particles is more.

What is a radioactive element?

Radioactive elements are made up of atoms whose nuclei are unstable and give off atomic radiation as part of a process of attaining stability. The emission of radiation transforms radioactive atoms into another chemical element, which may be stable or may be radioactive such that it undergoes further decay.

How is C 14 created?

Carbon-14 is continually formed in nature by the interaction of neutrons with nitrogen- 14 in the Earth’s atmosphere; the neutrons required for this reaction are produced by cosmic rays interacting with the atmosphere.

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Is oxygen 17 stable or unstable?

Isotopes of oxygen

Isotope Decay
abundance mode
16O 99.76 % stable
17O 0.04 % stable
18O 0.20 % stable

What is the difference between C 12 and C 14?

The difference between carbon – 12 and carbon-14 is the number of neutrons in each of their atoms. Atoms of carbon – 12 have 6 neutrons, while atoms of carbon-14 contain 8 neutrons. A neutral atom would have the same number of protons and electrons, so a neutral atom of carbon – 12 or carbon-14 would have 6 electrons.

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