Atoms

All atoms are composed of three basic parts. These parts are

• protons, electrons and ions

• protons, neutrons and isotopes

• protons, neutrons, and electrons

• protons, electrons, and elements

The positive particle in an atom.

• proton

• neutron

• electron

• electron cloud

How many protons does Nitrogen have?

• 7

• 8

• 14

• 14.01

The negative particle in an atom.

• proton

• neutron

• electron

What is the mass number of this element?

• 7

• 8

• 14

• 14.01

Which of the labeled structures is an electron?

• a

• b

• c

If an element has an atomic number of 11 and a mass number of 23, how many neutrons does it have?

• 11

• 12

• 23

• 34

The neutral particle in an atom.

• proton

• neutron

• electron

Which of the following particles is NOT found in an atom's nucleus?

• proton

• neutron

• electron

What is the chemical symbol of this element?

• 79

• Au

• AU

• gold