Question

match the atomic number 4,8,10,15,and 19 with each of the following .
1) element which can form trivalent ion .
2) an element with 4 shell.
3) element with 6 valence electrons .
4) element which does not form ion. ​

Answer 1

Answer:

1. 15
2. 19
3. 8
4. 10. hope it helps!