The following elements belong in the same family: JFU, RHIG, QKZ, COL, WAP, TMB, SNV, XDYE
1. I and D represent an entire period
2. R has one electron in its outermost shell
3. K is a halogen with the smallest radius
4. J has 14 protons
5. U is the least metallic element in its family
6. The valence shell configuration for A is 2s²,2p²
7. X is more closely related to D than the other elements in its group
8. The neutral atom of O has 8 electrons
9. G has the largest radius in its group
10. V is the most metallic alkaline earth element
11. N has the highest ionization energy in its group
12. H has 4 neutrons
13. Q has the lowest electron affinity in its group
14. Y is the most metallic member of its group
15. W is more metallic than P
16. M has the largest atomic mass in its group
17. C is the smaller then L
18. The electrons of B are distributed over three energy level