212,911 views
27 votes
27 votes
1. Element S and i have the same of valence electron

2. element Cl and i have the same of valence electron
3.element Cu and i have the same number of energy level
4. Element He and i have similar chemical properties
5. Element Na and i have similar chemical properties

User MegaManX
by
2.8k points

2 Answers

22 votes
22 votes
Elements that are in the same column, or group of the periodic table, have the same number of valence electrons.
User Bharathiraja
by
3.1k points
23 votes
23 votes

Answer:

Step-by-step explanation:

asd

User Cyx
by
3.2k points