CBSE Class 9 Answered
how to remember the first 18 elements and their neutrons?
Asked by | 10 Mar, 2013, 09:54: AM
Expert Answer
Hydrogen: 0
Helium: 2
Lithium: 4
Beryllium: 5
Boron: 6
arbon: 6
Nitrogen: 7
Oxygen: 8
Fluorine: 10
Neon: 10
Sodium: 12
Magnesium: 12
Aluminum: 14
Silicon: 14
Phosphorus: 16
Sulfur: 16
Chlorine: 18
Argon: 22
otassium: 20
Calcium: 20
Answered by | 10 Mar, 2013, 10:04: AM
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