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23 Cards in this Set
- Front
- Back
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H |
Hydrogen atomic number: 1 atomic weight: 1.001 |
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He |
Helium atomic number: 2 atomic weight: 4.002 |
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Li |
Lithium atomic number: 3 atomic weight: 6.94 |
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Be |
Beryllium atomic number: 4 atomic weight: 9.012 |
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B |
Boron atomic number: 5 atomic weight: 10.81 |
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C |
Carbon atomic number: 6 atomic weight: 12.011 |
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N |
Nitrogen Atomic number: 7 atomic weight: 14.007 |
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O |
oxygen atomic number: 8 atomic weight: 15.99 |
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F |
Fluorine atomic number: 9 atomic weight: 18.998 |
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Ne |
Neon atomic number 10 atomic weight: 20.1797 |
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Na |
Sodium atomic number : 11 atomic weight: 22.989 |
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Mg |
Magnesium atomic number: 12 atomic weight: 24.305 |
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Al |
aluminum atomic number: 13 atomic weight: 26.981 |
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Si |
Silicon atomic number: 14 atomic weight: 28.085 |
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P |
phosphorous atomic number: 15 atomic weight: 30.973 |
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S |
sulfur atomic number: 16 atomic weight: 32.05 |
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Cl |
Chlorine atomic number: 17 atomic weight: 34.45 |
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Ar |
Argon atomic number: 18 atomic weight: 39.948 |
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K |
Potassium Atomic number: 19 atomic weight: 39.098 |
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Ca |
Calcium Atomic number: 20 Atomic weight: 40.078 |
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number of Protons |
Atomic number |
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Number of neutrons |
approximately equal to the number of protons |
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Mass number |
Number of protons + number of neutrons |
