Question

Nitrogen (Z=7) is the element of the group V of the periodic table. Which of the following is the atomic number of the next element in the group?
(A) 9
(B) 14
(C)15
(D)17

Answer 1

Hint In order to tell which is the atomic number of the element next to Nitrogen in the group V, we have to refer to the periodic table. In the periodic table we have to mainly see the Group VA, i.e., the Nitrogen family. These elements can also be called the Pnictogen.

Complete step by step solution:
- Nitrogen is the element present in the Group 15(VA). Its Atomic number is 15.
- The elements present in the group 15 are called Pnictogen. They are also known as pentels.
- The Elements of Group VA are given below.

Atomic Number (Z)	Chemical Element	Electronic configuration
7	Nitrogen	2,5
15	Phosphorus	2,8,5
33	Arsenic	2,8,18,5
51	Antimony	2,8,18,18,5
83	Bismuth	2,8,18,32,18,5
115	Moscovium	2,8,18,32,32,18,5

- These elements are known as the Nitrogen family.
Properties of the Nitrogen family.
- Atomic radii increases down the group.
- Electronegativity decreases down the group.
- Ionization also decreases down the group.
- Melting point increases down the group.
- Boiling point increases down the group.
- Metallic character increases down the group.
- Element density increases on moving down the group.
- Nitrogen family forms covalent compounds.
- They have oxidation state +3 or +5.
- Nitrogen and Phosphorus are nonmetals, Arsenic and Antimony are metalloids and Bismuth are metals.
- All the elements in the Group 15 (VA) are solid at the room temperature, except for Nitrogen.

Therefore, the correct answer is option C.

Additional Information:
Uses of Group VA element are given below:
- Nitrogen and Phosphorus are essential for our life.
- Phosphorus is used in fertilizers, matches and fireworks.
- Arsenic is very toxic. But it is also used in chicken feeds.
- Antimony is used in alloys. It is combined with lead to make bullets.
- Bismuth is used in paints, medications and also used as a catalyst in chemical reactions.

Note:
- Phosphorus is essential for creation of DNA,
- cell membranes,
- bone and teeth formation in humans.
- Nitrogen and phosphorus are vital for food production.