Question

identify the number of valence electrons found in each element. al c ne k s br p ca

Explanation:

Step1: Recall valence - electron rule for main - group elements

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

Step2: Determine valence electrons for Al

Aluminum (Al) is in group 13. So, it has 3 valence electrons.

Step3: Determine valence electrons for C

Carbon (C) is in group 14. So, it has 4 valence electrons.

Step4: Determine valence electrons for Ne

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

Step5: Determine valence electrons for K

Potassium (K) is in group 1. So, it has 1 valence electron.

Step6: Determine valence electrons for S

Sulfur (S) is in group 16. So, it has 6 valence electrons.

Step7: Determine valence electrons for Br

Bromine (Br) is in group 17. So, it has 7 valence electrons.

Step8: Determine valence electrons for P

Phosphorus (P) is in group 15. So, it has 5 valence electrons.

Step9: Determine valence electrons for Ca

Calcium (Ca) is in group 2. So, it has 2 valence electrons.

Answer:

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