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Group V-A
Pnictogen Family of Periodic Table/ The Nitrogen Family
| Which two elements of group 5-A shows non metallic character | Nitrogen & Phosphorus |
| As (Arsenic) & Sb (Antimony) are | Metalloids |
| Which element of Pnictogen Family shows definite metallic properties | Bismuth (Bi) |
| Down the group the bonding character shifts from ? | Covalent ---------( bonding character)---------Ionic from covalent to Ionic due to increase in metallic character |
| How many elements of Nitrogen family have allotropes? | 3 - Phosphorus, Antimony & Arsenic |
| How many allotropes of P are there | Phosphorus have 6 allotropes |
| What are the common valencies of group 5-A elements | Three & Five Example: Phosphorus can make 3 or 5 covalent bonds |
| The compounds of Nitrogen not commonly found as Minerals | Inorganic Compounds |
| Atomic number of (Antimony) Sb is | 51 |
| Dinitrogen pentoxide is also called | Nitrogen Anhydride |
| Temp provided in Briklend & Eyde's process for formation of nitric oxide NO is | 3000° C |
| Nitric Acid can be prepared by dissolving N²O³ in H²O at Temp? | 0° C |
| N²O is also called | Laughing Gas |
| Aqua Regia is formed by mixing of | 1 mole of HNO³ + 3 mole of HCL |
| Which factor in aqua regia dissolves noble metals like gold & Platinum | Nascent Chlorine [Cl] in gaseous form |
| Cu & Pb when reacted with dilute acid gives | Nitric Oxide (NO) |
| NO² (nitrogen dioxide) is formed when Cu & Pb reacts with | Concentrated Acid |
| Give equation of chlorine dissolving Gold (Au) | Au + 3[Cl] → AuCl³ |