Answer:
Being in the group 15 implies these facts about the structure of nigrogen:
Explanation:
The number of the group is related with the valence electron shell of the elements: for the representative elements, the ones digit of the group number is equal to the number of valence electrons
This table shows that relation:
Group number Ones digit number of valence electrons
1 1 1
2 2 2
13 3 3
14 4 4
15 5 5
16 6 6
17 7 7
18 8 8
Then, you can conclude quickly that, being nitrogen in the group 15, it has 5 valence electrons.
Also, you can have a more detailed information about the structure of the nitrogen atom from the fact that it is a group 15 element, because, the valence shell of all the group 15 elements is represented by the general form ns² np³.
That form means:
