Question

The atomic numbers of some elements A, B, C and D present in the modern periodic table are 11, 7, 15, and 4 respectively. Choose the elements that belong to the same group. *
0 points
A & C
A & D
B & C
B & D

Answer 1

Answer:

B and D

Explanation:

B is the element Nitrogen, and D is Phosphurus. Both elements are in group 5 of the periodic table (15 is counting the transition metals.)