Question

1. gather data: four other pairs of elements in the same chemical family are listed below. list the number of valence electrons in each element. 3. analyze: what pattern do you see?

Explanation:

Step1: Determine valence electrons for Beryllium and Magnesium

Elements in the same chemical family (group) have the same number of valence electrons. Beryllium (Be) and Magnesium (Mg) are in Group 2 of the periodic table. The number of valence electrons for Group 2 elements is 2.

Step2: Determine valence electrons for Nitrogen and Phosphorus

Nitrogen (N) and Phosphorus (P) are in Group 15. For Group 15 elements, the number of valence electrons is \(15 - 10=5\).

Step3: Determine valence electrons for Oxygen and Sulfur

Oxygen (O) and Sulfur (S) are in Group 16. For Group 16 elements, the number of valence electrons is \(16 - 10 = 6\).

Step4: Determine valence electrons for Fluorine and Chlorine

Fluorine (F) and Chlorine (Cl) are in Group 17. For Group 17 elements, the number of valence electrons is \(17- 10=7\).

Answer:

Element Pair	Valence Electrons
Nitrogen - Phosphorus	5
Oxygen - Sulfur	6
Fluorine - Chlorine	7

For the pattern: Elements in the same chemical family (group) have the same number of valence electrons.