State the Atomic Number and Mass Number of First 20 Elements of P.T Flashcards

Can you state the atomic number and mass number of first 20 elements of P.T.? If you are confused, these flashcards can help you to understand better. While the mass quantity is the sum of the protons and neutrons in an atom, the atomic number is the value found associated with an element on the periodic table. Read and study these flashcards to become better acquainted with this topic.

20 cards   |   Total Attempts: 195
  

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Cards In This Set

Front Back
Hydrogen
1 H 1
Helium
4 He 2
Lithium
7 Li 3
Beryllium
9 Be 4
Boron
11 B 5
Carbon
12 C 6
Nitrogen
14 N 7
Oxygen
16 O 8
Fluorine
19 F 9
Neon
20 Ne 10
Sodium
23 Na 11
Magnesium
24 Mg 12
Aluminium
27 Al 13
Silicon
28 Si 14
Phosphorus
31 P 15