C-04-Q173mediumsingle_mcq
An element with atomic number 12 (X), 20 (Y), 24 (Z) — which two are in the same group?
An element with atomic number 12 (X), 20 (Y), 24 (Z) — which two are in the same group?
- aX and Y (both Group 2)
- bX and Z
- cY and Z
- dnone of them