Atomic #, Mass #, Isotopes

What is the mass number of chromium-52

• 23

• 53

• 24

• 52

How many protons are in the Sodium atom?

• 23

• 11

• 12

• 22

Where are electrons located in atoms?

• Inside the nucleus alongside protons

• Inside the nucleus alongside neutrons

• Outside the nucleus

• Atoms do not contain electrons

How many electrons does Tungsten (W) have?

• 74

• 112

• 184

• 84

How many neutrons does the chlorine-37 have?

• 20

• 19

• 18

• 17

What is the mass number of silver given the following symbol in isotopic notation?

• 47

• 108

• 61

• 107

How many neutrons are in the molybdenum-97 isotope?

• 97

• 54

• 42

• 55

How many electrons are in the aluminum ion?

• 14

• 10

• 26

• 13

What is the unknown element in the following image?

• Mercury

• Bromine

• Tin

• Magnesium

What is the average atomic mass of carbon?

• 12.00 u

• 13.02 u

• 13.03 u

• 12.01 u