Chapter 4 Practice Name_______________________________

Period_____________ Date _____________

Symbol	Name	Atomic Number	Mass Number	Number of protons	Number of neutrons	Number of electrons
	Cobalt-58
		28	58
				33	40
	Rhodium-103
		78			117
			118			50
					84	60
			1

1. An atom has 11 protons 11electrons and 10 neutrons. What is its

a. atomic number

b. mass number

c. Name

d. charge

e. Complete symbol

2. For argon-39, what is its

a. Number of protons

b. Number of neutron

c. Number of electrons

d. Mass number

e. atomic number

f. Complete symbol

3. For what is the

a. Number of protons

b. Number of neutron

c. Number of electrons

d. Mass number

e. atomic number

f. Name

5. For cobalt-60, what is its

a. Number of protons

b. Number of neutron

c. Number of electrons

d. Mass number

e. atomic number

f. Complete symbol

6. For what is the

a. Number of protons

b. Number of neutron

c. Number of electrons

d. Mass number

e. atomic number

f. Name