Question

what is the atomic number of the next element in the same group as beryllium?
○ 2
○ 3
○ 5
○ 12
possible points: 4.16

Explanation:

Beryllium (Be) has atomic number 4 and is in Group 2 (alkaline earth metals). Elements in the same group have similar properties. The next element below Be in Group 2 is Magnesium (Mg), with atomic number 12. Other options: 2 (He, noble gas), 3 (Li, Group 1), 5 (B, Group 13) don't match Group 2.

Answer:

D. 12 (assuming the last option is 12, as per the context of Group 2 elements; Beryllium is in Group 2, next element is Magnesium with atomic number 12)