Question

does the model correctly represent the electron dot diagram of magnesium? why or why not? choose two correct answers.
mg·
no, because magnesium has seven valence electrons.
yes, because the chemical symbol of magnesium is mg
no, because both of the dots should be on top of the chemical symbol
yes, because magnesium has two valence electrons
no, because the chemical symbol of magnesium is mn

Explanation:

1. Magnesium (Mg) is in Group 2 of the periodic table, so it has 2 valence electrons, which matches the number of dots in the diagram.
2. The electron dot diagram correctly uses Mg, the chemical symbol for magnesium.
3. Valence electrons are placed singly on different sides first, so the two dots on separate sides are correct, not both on top.
4. Magnesium does not have 7 valence electrons, and its symbol is not Mn (which is manganese).

Answer:

B. Yes, because the chemical symbol of magnesium is Mg
D. Yes, because magnesium has two valence electrons