Isotopes and Ions

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 10

• 20

• 25

• 35

Isotopes are elements with a different amount of

• protons
• neutrons
• electrons
• atoms

Tags

NGSS.HS-PS1-8

an element will always have the same number of 

• neutrons
• protons
• isotopes
• atoms

An ______________ is the same element, with the same number of protons, but different numbers of neutrons

• Atom
• Isotope
• Atomic Number
• Mass Number

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

• number of neutrons
• atomic number
• number of electrons 
• mass number

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

What is the atomic mass (rounded to the nearest whole number) of this element

• 196
• 196.95
• 197
• 79

Potassium-39 has how many neutrons?

• 19

• 18

• 20

• 21

Tags

NGSS.HS-PS1-8

Nickel-59 has how many neutrons?

• 30

• 31

• 32

• 33

Bromine-80 has how many neutrons?

• 41

• 42

• 44

• 45