Atomic Structure and Mole Review

Who performed the gold foil experiment?

• Thomson
• Dalton
• Rutherford
• Bohr

Who discovered the electron?

• Thomson
• Dalton
• Bohr
• Rutherford

What particle provided the positive charge for an atom?

• proton 
• neutron
• electron
• nucleus

Which particle contributes the negative charge to the atom?

• proton
• electron
• neutron
• nucleus

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

Who is the first scientist to think that the atom was the smallest unit of matter?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

What is the unit used to measure weighted average atomic mass?

• amu
• gram
• angstrom
• nanogrm

Calculate the number of neutrons in lead-210

• 82
• 128
• 210
• 292

What is the atomic number for an element with 41 neutrons and a mass number of 80?

• 39
• 41
• 80
• 121

How many protons are present in phosphorus-31

• 15
• 16
• 31
• 46