What are abnormal behaviour of Nitrogen atom as compared to other family members?

Abnormal Behaviour of Nitrogen:

(1) Nitrogen is a gas, while other elements are solids.

(2) Nitrogen molecule is diatomic (N₂) while molecules of P, As and Sb are tetra atomic (P₄, As₄, Sb₄) and that of Bi is mono atomic.

(3) Halides of nitrogen except NF₃ are highly explosive.

(4) N₂O₃ and N₂O₅ are monomeric while trioxides and pentoxides of P,As and Sb are dimeric.

(5) It is chemically inert due to the presence of triple bond other elements are highly reactive due to presence of single bond in their molecule.
(6) N₂, CO, (CN)¯ are isoelectronic species but N₂ is less reactive due to nonpolar nature and high ionisation energy.

(7) N does not form sulphides

Related Questions:

Which is more basic N(CH3)3 or N(SiH3)3 , explain?

Trisilyl amine, N(SiH3)3 is planar whereas trimethyl amines N(CH3)3 is pyramidal. Explain why?.

Are all the five bonds of PCl5 equivalent? Justify your answer.

What are common structural features of oxides (P4O6 and P4O5) of phosphorous?

What are the structural difference between oxides ( P4O6 and P4O10) of phosphorous?

What are abnormal behaviour of Nitrogen atom as compared to other family members?

What is product obtained when N2O5 is treated with NaCl?

What is metaphophoric (HPO3)?

Phosphorus can form PCl5 but nitrogen can not form NCl5 why?

Why PCl3 hydrolysed while NCl3 can not be hydrolysed?

What are the structural difference between oxides ( P4O6 and P4O10) of phosphorous?

According to “Bent Rule” loan pair prefer to stay to in those atomic orbital have more (S) character. And bond length is directly proportional to p-character. 

(1) In case of P₄O₆ molecules atomic orbital containing loan pair have more (s)-character and less (P) character hence shorter bond length while remaining orbitals have less (S) character and more (P) character hence longer bond length (X₁) than (X₂) in P₄O_{10 .}

(2) We know that On increasing % s character in hybrid orbital, the bond length decreases while bond angle increases.

(3) In Case of P₄O₆   (O-P-O) bond is Smaller due to higher P character in atomic orbital than orbital containing (O-P-O) in P₄O₁₀(have more s-character )

For reading more Details about  click on  Bent Rule andDrago's rule

Related Questions:

What is Bent’s rule of hybridization?

Which of the following compound have longest (S=O)bond length , O=SF2, O=SCl2, O=SBr2.

Why Bond length of O-O is greater in H2O2 than O2F2?

How to arrange increasing (C-H) bond length in increasing order and H-C-F bond angle in the given compounds, CH4, CH3F, CH2F2 and CHF3 ?

What are common structural features of oxides (P4O6 and P4O5) of phosphorous?

Phosphorous is a pentavalent element hence show +3 and +5 oxidation state (d orbital presence).it form two oxide P₂O₃ (+3) and P₂O₅ (+5). These oxide of phosphorus exist as dimer in form of P₄O₆ (+3) and P₄O₅

Common feature of P₄O₆ and P₄O₁₀ 

(1) Both oxides have closed cage like structure.

(2) Both oxides contain six (P-O-P) Bond.

(3) Both oxide have 4 six membered ring.

(4) Both are the anhydride of their respective acids.

(5) Both are Non planer