Atomic Structure Assessment

The chemical symbol for iron is

• I

• K

• Na

• Fe

What is the atomic number for carbon?

• 2

• 3

• 6

• 8

How many protons are there in oxygen?

• 8

• 10

• 6

• 2

The electrical charge of a neutron is

• hot

• positive

• cold

• negative

• none of the above

All of the following particles are a part of an atom except

• protons

• ions

• neutrons

• electrons

The mass number is the total number of protons and

• electrons

• neutrons

• positrons

• all of the above

Which of the following are isotopes of the same element?

• I and II

• II and III

• I and III

• I, II, and III

• none of the above

Which part of the atom accounts for most of its mass?

• electrons

• protons

• nucleus

• neutrons

• all of the above

If the mass number of fluorine is 19, how many neutrons are in the nucleus?

• 7

• 10

• 9

• 8

Carbon has 15 known isotopes from C-8 to C-22. How many neutrons does the lightest isotope of carbon have?

• 2

• 6

• 8

• 16