QUIZ #6 MOD-Isotopes & Atomic Structure

The _________ of an element equals the number of protons in an atom of that element.

• mass number
• neutrons
• atomic number

What quantities vary between isotopes of an element?

• neutrons and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons

How many neutrons does the isotope of lithium have?

• 5
• 3
• 4

How many neutrons does uranium-235 have?

• 143
• 92
• 146
• 143

In a correctly written symbol what would be located in the "A" position?

• mass number
• atomic number
• number of electrons 

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons

which atom has  4 neutrons?

• Li-6
• Li-7
• Li-8

which explanation of this notation is correct?

•  12 is proton #
• 6 tells you there are 6 neutrons
• 6 tells you there are 6 protons

The atomic number of Uranium is:

• 92
• 16
• 53

O is the symbol for what element?

• Orduvicium
• Oxygen
• Osmium