Question

question 2. drag the correct number of valence electrons to each representative element. element valence electrons lithium sulfur barium chlorine

Explanation:

Step1: Recall the group number and valence electron relation

For representative elements (groups 1 - 2 and 13 - 18), the group number (adjusted for groups 13 - 18 by subtracting 10) gives the number of valence electrons. Lithium (Li) is in group 1. So, it has 1 valence electron.

Step2: Determine sulfur's valence electrons

Sulfur (S) is in group 16. Using the formula (group number - 10 for groups 13 - 18), \(16 - 10=6\) valence electrons.

Step3: Find barium's valence electrons

Barium (Ba) is in group 2. Group 2 elements have 2 valence electrons.

Step4: Calculate chlorine's valence electrons

Chlorine (Cl) is in group 17. Using the formula (group number - 10 for groups 13 - 18), \(17 - 10 = 7\) valence electrons.

Answer:

Lithium: 1, Sulfur: 6, Barium: 2, Chlorine: 7