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Types of Radioactivity

Radioactivity is a natural phenomenon that happens when some unstable atoms release energy to become more stable.

These atoms emit particles or invisible radiation in a process called radioactive decay.

What is radioactivity?

Radioactivity happens when:

an atom is unstable.

its nucleus has excess energy.

it releases particles or radiation to achieve stability.

These atoms are called radioactive isotopes.

How does radioactive decay happen?

To become more stable, the atom may emit different types of radiation.

The main processes are:

alpha decay (α).

beta decay (β).

gamma emission (γ).

Each one has different characteristics.

Alpha Particles (α)

Alpha particles are:

helium nuclei.

formed by 2 protons and 2 neutrons.

positively charged.

Characteristics:

low penetration ability.

easily blocked by paper or skin.

Despite their low penetration, they can be dangerous if they enter the body.

Beta Particles (β)

Beta particles are:

high-energy electrons or positrons.

smaller and lighter than alpha particles.

electrically charged.

Characteristics:

greater penetration than alpha radiation.

can pass through thin materials.

They require stronger materials for protection.

Gamma Radiation (γ)

Gamma radiation is:

a type of electromagnetic radiation.

without mass.

without electric charge.

Characteristics:

extremely energetic.

has the greatest penetration ability.

It can pass through many materials and requires special protection, such as lead or concrete.

Difference between the types of radiation:

Alpha (α) → low penetration, heavy particles.

Beta (β) → intermediate penetration.

Gamma (γ) → highest energy and greatest penetration.

Did you know?

A descoberta da radioatividade foi um marco na história da ciência e abriu portas para uma compreensão mais profunda da estrutura da matéria e das forças nucleares. Gosto bastante dessa área da ciência. by ＠AndersonBrando, Brasil

Trata-se de uma área de estudo intrigante e crucial na ciência, que explora o comportamento de elementos químicos que emitem radiação devido à instabilidade de seus núcleos atômicos. by ＠YasminLima, Brasil

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