Isotopes and Mass Number. Isotope. Atoms of the same element with: Same number of protons BUT Different number of neutrons. ELEMENT IS TO ISOTOPE AS DOG IS TO DOG BREED. Mass Number: Mass of an atom. FLASHBACK: Protons are what animal? Neutrons are what animal?
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Isotopes and Mass Number
Atoms of the same element with:
Same number of protons
Different number of neutrons
ELEMENT IS TO ISOTOPE AS DOG IS TO DOG BREED
mass# = protons + neutrons
Carbon - 14
Oxygen - 17
For element Xmass = 7.016abundance = 92.5%
X - 6
X - 7
Find the atomic mass on the periodic table
What is element X?
The element is Lithium!