Question

identify the number of valence electrons found in each element. answer bank: 1, 2, 3, 4, 5, 6, 7, 8. elements: al, c, ne, k, s, br, p, ca

Explanation:

Step1: Recall valence - electron rules

Valence electrons can be determined by group number in the periodic table (for main - group elements).

Step2: Determine for Al

Aluminum (Al) is in group 13. It has 3 valence electrons.

Step3: Determine for C

Carbon (C) is in group 14. It has 4 valence electrons.

Step4: Determine for Ne

Neon (Ne) is in group 18. It has 8 valence electrons.

Step5: Determine for K

Potassium (K) is in group 1. It has 1 valence electron.

Step6: Determine for S

Sulfur (S) is in group 16. It has 6 valence electrons.

Step7: Determine for Br

Bromine (Br) is in group 17. It has 7 valence electrons.

Step8: Determine for P

Phosphorus (P) is in group 15. It has 5 valence electrons.

Step9: Determine for Ca

Calcium (Ca) is in group 2. It has 2 valence electrons.

Answer:

Al: 3
C: 4
Ne: 8
K: 1
S: 6
Br: 7
P: 5
Ca: 2