Answers to radiometric dating lab

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Carbon's (C) atomic number is 6 because it has six protons in its nucleus; gold's (Au) atomic number is 79 because it has 79 atoms in its nucleus.

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Some of these minerals (represented above as gray hexagons) incorporate the radioactive parent atoms (blue diamonds) into their crystalline structures; this marks the initiation of the "half-life clock" (i.e., the start time, or time zero).

To summarize, the key piece of information that needs to be determined from a mineral specimen in order to determine its absolute age is its age in number of half lives.

This can be mathematically determined by solving for = the number of half-lives that have passed. Suppose you analyzed a mineral sample and found that it contained 33,278 parent atoms and 14,382 daughter atoms.

The number of protons equals the element's atomic number.

Have a look at the periodic table of the elements below.

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