2.2 The Development of the Atomic Model

What are the subatomic particles in atoms of various elements?

• proton, neutron, negatron

• proton, neutron, electron

• proton, neutron, cathode,

• anode,neutron, cathode

The symbol for electron is____________

• e
• a

• ee

• eel

the symbol for proton is ____________________

• p
• P

• pr

• Pr

The symbol for neutron is ________________

• n
• N

• Ne

• ne

Relative mass for proton and neutron is _____________

Relative charge for neutron is __________

• 0

• +1

• 1

• -1

relative charge for proton is ____________

• 0

• +1

• -1

• 2

relative charge for electron is __________

• 1

• -1

• 1/1840

• +1

Relative mass for electron is

• 1

• 1/1840

Who was the first scientist to discover the Atomic Structure Model?

• Niels Bohr

• James Chadwick

• John Cena

• John Dalton