Unit 4: Subatomic Particles, radioactive decay, electron config

Front

What is the remaining fraction of a radioactive sample after three half-lives?

Back

1/8

Front

What do you call an atom that has gained or lost electrons?

Back

An ion.

Front

If a diagram shows 32 atoms with 32 parent isotopes and 0 daughter isotopes, how many half-lives have occurred?

Back

0 half-lives.

Front

What is the noble gas electron configuration for aluminum?

Back

[Ne]3s²3p¹

Front

Which type of nuclear radiation is emitted during alpha decay?

Back

Alpha radiation.

Front

Define half-life in the context of radioactive decay.

Back

Half-life is the time required for half of the radioactive atoms in a sample to decay.

Front

What is the difference between a parent isotope and a daughter isotope?

Back

A parent isotope is the original radioactive isotope that undergoes decay, while a daughter isotope is the product of that decay.

Front

How does the concept of half-life apply to radioactive dating?

Back

Radioactive dating uses the known half-lives of isotopes to determine the age of materials by measuring the ratio of parent to daughter isotopes.

Front

What is the significance of the noble gas configuration in electron configuration?

Back

The noble gas configuration represents a stable electron arrangement, often used to simplify the representation of electron configurations.

Front

What is the general equation for radioactive decay?

Back

N(t) = N0 * (1/2)^(t/T1/2), where N(t) is the remaining quantity, N0 is the initial quantity, t is time, and T1/2 is the half-life.