1cAtomic structure

Syllabus objectives

• 1.14know what is meant by the terms atom and molecule
• 1.15know the structure of an atom in terms of the positions, relative masses and relative charges of sub-atomic particles
• 1.16know what is meant by the terms atomic number, mass number, isotopes and relative atomic mass (Ar)
• 1.17be able to calculate the relative atomic mass of an element (Ar) from isotopic abundances