Alpha Decay. Radioactive Decay Alpha Decay Radioactive Decay Alpha Decay Beta Decay.

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Presentation transcript:

Alpha Decay

Radioactive Decay

Alpha Decay

Radioactive Decay Alpha Decay Beta Decay

Radioactive Decay Alpha Decay Beta Decay Gamma Decay

Radioactive Decay Alpha Decay Beta Decay Gamma Decay

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N A large unstable nucleus N + N +

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N +

+ N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N + An alpha particle

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N N + N + An alpha particle A smaller, more stable nucleus

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N The PARENT nucleus N + N +

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N The PARENT nucleus N + N +

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N The PARENT nucleus N + N + N + N + An alpha particle

Alpha Decay + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N The PARENT nucleus N + N + N + N + + N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N + N An alpha particle The DAUGHTER nucleus

Alpha Decay N + N + An alpha particle

An Alpha Particle

N + N +

N + N + proton

An Alpha Particle N + N + proton neutron proton

An Alpha Particle N + N + proton

An Alpha Particle N + N + proton

An Alpha Particle N + N +

N + N + A charge of +2

An Alpha Particle N + N + A charge of +2

An Alpha Particle N + N + Mass #

An Alpha Particle N + N +

N + N + proton neutron proton

An Alpha Particle N + N + Total mass = 4 proton neutron proton

An Alpha Particle N + N + Mass # Total mass = 4

An Alpha Particle N + N + Mass # = 4 Total mass = 4

An Alpha Particle N + N + Mass # = 4

An Alpha Particle N + N + The symbol for an Alpha Particle

An Alpha Particle N + N + or

An Alpha Particle N + N + or Another symbol for an Alpha Particle

An Alpha Particle N + N + or Another symbol for an Alpha Particle or

Some Examples of Alpha Decay

Alpha decay of americium–241

The Parent Nucleus Alpha decay of americium–241

The Daughter Nucleus Alpha decay of americium–241

An Alpha Particle Alpha decay of americium–241

Charge Alpha decay of americium–241 Charge

Protons Alpha decay of americium–241 Protons

Alpha decay of americium–241 Atomic Number

Charge Alpha decay of americium–241 Charge

Alpha decay of americium–241 Charge

Alpha decay of americium–241 Total charge on left = 95

Alpha decay of americium–241 Total charge on left = 95 Total charge on right = = 95

Alpha decay of americium–241 Mass

Alpha decay of americium–241 protons + neutrons

Alpha decay of americium–241 Mass number

Alpha decay of americium–241 Mass

Alpha decay of americium–241 Total mass on left = 241

Alpha decay of americium–241 Total mass on left = 241 Total mass on right = 241

Alpha decay of americium–241 An Alpha Particle

Alpha decay of americium–241 An Alpha Particle

Alpha decay of americium–241 An Alpha Particle

Alpha decay of radium–222 An Alpha Particle The Parent Nucleus The Daughter Nucleus

Charge Alpha decay of radium–222

Mass

Alpha decay of radium–222 An Alpha Particle

Alpha decay of radium–222 An Alpha Particle

Alpha decay of radium–222 An Alpha Particle

Filling in the Missing Particle

?

Charge

= 92 Charge

= 92 Total charge on right = = 92 Charge

= 92 Total charge on right = = 92 Charge = 2 Charge

= 92 Total charge on right = = 92 Charge = 2 Charge = 90

Charge = 92 Total charge on right = = 92 Charge = 2 Charge = 90

thorium

Charge = 92 Total charge on right = = 92 Charge = 2 Charge = 90 Element symbol

Mass

Total mass on left = 238

Mass Total mass on left = 238 Total mass on right = = 238

Mass Total mass on left = 238 Total mass on right = = 238

Mass Total mass on left = 238 Total mass on right = = 238

Mass Total mass on left = 238 Total mass on right = = 238

The Daughter Nucleus

The Parent Nucleus An Alpha Particle Alpha decay of uranium–238

The Daughter Nucleus The Parent Nucleus Alpha decay of uranium–238

2 elements down

Atomic number decreases by 2

The Daughter Nucleus The Parent Nucleus Alpha decay of uranium–238 In an alpha decay, the atomic number of the daughter nucleus is always 2 less than the atomic number of the parent nucleus. Atomic # decreases by 2

The Daughter Nucleus The Parent Nucleus Alpha decay of uranium–238 In an alpha decay, the mass of the daughter nucleus is always 4 less than the mass of the parent nucleus. Mass decreases by 4

Finding the Parent Nucleus

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus.

An alpha particle

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. ?

?

Total charge on right = = 84

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. Total charge on left = 84 Total charge on right = = 84

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. Total charge on left = 84 Total charge on right = = 84

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus.

polonium Total charge on right = = 84

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. Total mass on right = = 218

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. Total mass on right = = 218 Total mass on left = 218

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. Total mass on right = = 218 Total mass on left = 218

The daughter nucleus of an alpha decay is lead–214. Write the nuclear notation for the parent nucleus. Nuclear notation for the Parent Nucleus