Beta Decay

The particle emitted in beta-minus decay is a (a)   .

Which particle is emitted in beta-plus decay?

• electron

• neutron

• positron

• proton

What is the relative charge of a positron?

• -1

• 0

• 1

• 2

The relative mass of both an electron and a positron is (a)   .

Beta particles are stopped by a few millimetres of (a)   .

In beta-minus decay, a proton changes to a neutron and an electron.

• True

• False

In beta-plus decay...

• the mass number decreases by 1

• the mass number does not change

• the mass number increases by 1

• the atomic number decreases by 1

• the atomic number increases by 1

The atomic number of Actinium (Ac) is (a)   .

The atomic number of Carbon (C) is (a)   .

Tags

NGSS.HS-PS1-1

Explain how beta radiation is used to monitor paper thickness.