Atomic Structure

Question 1

What is an atom?

Answer 1

An atom is the smallest particle of an element which still retains the properties of that element

Question 2

Give the location, relative mass and charge of a proton, neutron and electron

Answer 2

Proton - nucleus - 1 AMU - +1 unit

Neutron - nucleus - 1 AMU - 0 unit

Electron - outside the nucleus - 1/1840 AMU - -1 unit

Question 3

What is the atomic number?

Answer 3

The atomic number of an atom is the number of protons in the nucleus of that atom

Question 4

What is the mass number?

Answer 4

The mass number is the number of protons and number of neutrons in an atom