15 The elements of nitrogen family 15.1 Outline on nitrogen family 15.2 The elemental substances of nitrogen family 15.3 The compounds of nitrogen 15.4 The compounds of phosphorus -15.5 The compounds ofAs,Sb and Bi
15.5 The compounds of As, Sb and Bi 15.4 The compounds of phosphorus 15.3 The compounds of nitrogen 15.2 The elemental substances of nitrogen family 15.1 Outline on nitrogen family §15 The elements of nitrogen family
15.1 Outline on nitrogen family The elements of nitrogen family(VA):N,P,As,Sb,Bi Valence electron configuration:ns2np3 N P As Sb Bi 氧化值 +5 +5 +5 +5 (+5) +3 +3 +3 +3 -3 -3 -3 (-3) 最大配 4 位数 6 6 6 6 M203 酸性 酸性 两性 两性碱性 MH; NH3 PH3 AsH3 SbHa BiH; 碱性减弱，稳定性下降
15.1 Outline on nitrogen family The elements of nitrogen family(VA)：N, P, As, Sb, Bi Valence electron configuration：ns 2np 3 N P As Sb Bi +5 +5 +5 (+5) +3 +3 +3 +3 氧化值 +5 | -3 -3 -3 (-3) 最大配 位数 4 6 6 6 6 M2O3 酸性 酸性 两性 两性 碱性 氨 膦 胂 SbH3 BiH3 MH3 碱性减弱，稳定性下降 NH3 PH3 AsH3 SbH3 BiH3
15.2 The elemental substances of nitrogen family N2 is colorless and odorless gas.N2 is chemically inert.It will react directly with many metals (such as Li,Ca,Mg)when heated to give ionic nitrides.Nitrogen is also easily converted to a liquid(b.p,-195.8 C)and can dissolve in water slightly
N2 is colorless and odorless gas. N2 is chemically inert. It will react directly with many metals (such as Li, Ca, Mg) when heated to give ionic nitrides. Nitrogen is also easily converted to a liquid (b.p, -195.8°C) and can dissolve in water slightly. 15.2 The elemental substances of nitrogen family
The allotropes of phosphorus 黑磷←高温高压 一白磷 隔绝空气400C红磷 net framework, P:chemically relatively stable, conductive, active,autoignite in combust at insoluble in org. air,soluble in T>400°C,insoluble solvent. nonplolar solvent. in org.solvent. Self-ignite in air白 combustion of P 白磷红磷 磷空气中自燃 磷的燃烧
白磷 红磷 The allotropes of phosphorus 黑磷高温高压 白磷隔绝空气 400 C 红磷 P4 : chemically active, autoignite in air, soluble in nonplolar solvent. relatively stable, combust at T>400C, insoluble in org. solvent. combustion of P 磷的燃烧 Self-ignite in air白 磷空气中自燃 net framework， conductive, insoluble in org. solvent
白磷的结构 红磷的结构 两 Bi 黑磷的结构 N2,P:metalloid, As,Sb:quasi-metal, Bi:metal D
As Sb Bi N2 , P: metalloid， As, Sb: quasi-metal， Bi: metal 白 磷 的 结 构 红 磷 的 结 构 黑磷的结构