Create
Learn
Share

Mass number of 1-20 elements

rename
themartian's version from 2017-09-25 13:46

Section 1

Question Answer
Hydrogen1
Helium4
Lithium7
Beryllium9
Boron11
Carbon12
Nitrogen14
Oxygen16
Fluorine18
Neon20
memorize

Section 2

Question Answer
Sodium23
Magnesium24
aluminium27
Silicon28
Phosphorus31
Sulphur32
Chlorine35
Argon40
Potassium39
Calcium40
memorize

Recent badges