1. C > B > Be > Li
2. C > Be > B > Li
3. B > C > Be > Li
4. Be > Li > B > C
1. Pentaerythritol monostearate
2. Sodium stearyl sulphate
3. Trimethyl stearyl ammonium bromide
4. Ethoxylated nonylphenol
1. | It forms only one type of monosubstituted product |
2. | There are three carbon-carbon single bonds and three carbon-carbon double bonds |
3. | The heat of hydrogenation of benzene is less than its theoretical value |
4. | The bond angle between carbon-carbon bonds is 120° |