Answer
Hydrogen: 1
Helium: 2
Lithium: 1
Beryllium: 2
Boron: 3
Carbon: 4
Nitrogen: 5
Oxygen: 6
Fluorine: 7
Neon: 8
Work Step by Step
Using your memory try to remember the elements in the first two rows and try to remember the number of valence electrons based on which column they were in. You can also use this: Hi! - H
He - He
Lies - Li
Because - Be
Boys - B
Can - C
Not - N
Operate - O
Fireplaces - F
