NUCLEAR ATOM

An atom has a nucleus surrounded by

• proton

• electron

• neutron

In the nucleus of an atom, there are

• electron

• proton

• neutron

The proton number (atomic number) Z is

• number of neutrons

• number of neutrons and protons

• number of electrons

• number of protons

The nucleon number (mass number) A is

• number of neutrons

• number of neutrons and protons

• number of electrons

• number of protons

An atomic nucleus with a particular value of A and Z is called

• neutron

• nucleus

• nuclide

Nuclides with the same proton numbers but different nucleon numbers are called

• isolation

• isotope

• iso iso

What does the nucleus of an atom of carbon contain

• neutrons only

• protons only

• protons and electrons only

• protons and neutrons only