3 Types of Nuclear Radiation

Front

Negatively charged particles emitted from a nucleus at a high speed are ____.

Back

Beta particles.

Front

If the half life of a radioactive element is 100 yrs, how long would it take for the radioactivity to reduce by one half?

Back

100 years.

Front

If we start off with element 50_24X, then after an alpha decay we get another element Y that looks like ____.

Back

46_22Y.

Front

A certain radioactive sample has a half life of 2 years. After 4 years, how much of the 100 mg of sample is left?

Back

25 mg.

Front

Alpha particles are _____.

Back

a) positively charged.

Front

Alpha particles consist of _____.

Back

Two protons and two neutrons.

Front

What is the charge of beta particles?

Back

Negatively charged.

Front

What type of radiation is emitted during alpha decay?

Back

Alpha particles.

Front

What is the half-life of a radioactive substance?

Back

The time taken for half of the radioactive atoms in a sample to decay.

Front

What happens to the atomic number of an element after alpha decay?

Back

It decreases by 2.