Atomic Structure

Question 1

State the definiton of relative atomic mass.

Answer 1

• The weighted average mass of one atom of an element relative to 1/12 the mass of carbon-12.

Question 2

Why is there no difference between chemical properties of isotopes?

Answer 2

• They have the same electron configuration.

Question 3

State the definiton of the mass number of an atom.

Answer 3

• The total number of protons and neutrons in the nucleus of an atom.

Question 4

State the definiton of relative molecular mass.

Answer 4

• The weighted average mass of one molecule of an element relative to 1/12 of the mass of carbon-12.

Question 5

State the definition of atomic number of an element.

Answer 5

• The number of protons in the nucleus of an atom.