1. BiH3
2. AsH3
3. PH3
4. NH3
NH3
1. Halls method
2. Hoopes method
3. Baeyers method
4. Serpecks method
Hoopes method
1. With lime
2. Unit it fuses
3. With carbon
4. Serpecks method
Serpecks method
1. NO2
2. N2O3
3. NO
4. N2O
NO
1. Al2O3
2. Al(OH)3
3. Na3AlO3
4. NaAlO2
NaAlO2
1. Bismuth
2. Antimony
3. Nitrogen
4. Phosphorus
Bismuth
1. Alluvial sand
2. Argentiferous lead
3. AgCl
4. Ag2S
Argentiferous lead
1. PH3
2. H2O
3. NH3
4. AsH3
NH3
1. Limonite
2. Siderite
3. magnetite
4. Haematite
magnetite
1. 8
2. 2
3. 3
4. 4
4