Question

Element Lewis Dot # of Valance e- Gain/Lose ___ e- Valance Charge
Na 1 L 1 +1
Be
Cl
S
Al
Ne
K
N
O
Ca
P
B
Mg

Answer 1

Here’s the completed table (Lewis dot = valence electrons shown as • around the element symbol):

Element | Lewis Dot | # of valence e- | Gain/Lose ___ e- | Valence charge (common ionic)
---|---:|---:|---:|---:
Na | Na• | 1 | lose 1 e- | +1
Be | Be•• | 2 | lose 2 e- | +2
Cl | Cl••••••• | 7 | gain 1 e- | -1
S | S•••••• | 6 | gain 2 e- | -2
Al | Al••• | 3 | lose 3 e- | +3
Ne | Ne•••••••• | 8 | neither (0) | 0
K | K• | 1 | lose 1 e- | +1
N | N••••• | 5 | gain 3 e- | -3
O | O•••••• | 6 | gain 2 e- | -2
Ca | Ca•• | 2 | lose 2 e- | +2
P | P••••• | 5 | gain 3 e- (common ionic) | -3
B | B••• | 3 | lose 3 e- (often covalent) | +3
Mg | Mg•• | 2 | lose 2 e- | +2

Notes:
- Dots represent only valence electrons. For simplicity I list the most common ionic charges; many elements (B, P, N, etc.) often form covalent bonds or multiple oxidation states in compounds.