Spring Semester Review

According to the Bohr model above, which element is represented?

• Ba

• Na

• Mg

• Ca

According to the Bohr model above, which element is represented?

• S

• Br

• Cl

• I

According to the Bohr model shown above, what is the mass number of this isotope?

• 30

• 18

• 17

• 35

An isotope of Fe-50 would have how many neutrons?

• 24

• 20

• 22

• 28

An atom of Mg-40 would have how many neutrons?

• 30

• 28

• 27

• 34

Atoms that lose valence electrons form what?

• protons

• anions

• cations

• positrons

Atoms that gain valence electrons form what?

• anions

• cations

• positrons

• neutrons

Which one of the three subatomic particles is the largest?

• proton

• neutron

• electron

Which of the three subatomic particles is the smallest?

• proton

• neutron

• electron

 $\frac{18}{?}B$  What is the missing number in the isotope?

• 5

• 6

• 7

• 8