NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 13 & 14)
NTA Abhyas 2020 · Chemistry · p Block Elements (Group 13 & 14)
The general trend in the properties of elements of carbon family...
The general trend in the properties of elements of carbon family shows that with increase in atomic number
Options
- Athe tendency towards catenation increases
- Bthe tendency to show +2 oxidation state increases
- Cmetallic character decreases
- Dthe tendency to form complexes with covalency higher than four decreases
Correct answer
B. the tendency to show +2 oxidation state increases
Step-by-step solution
Here statement B is correct as with increase in atomic number down the group the tendency to show +2 oxidation state increases due to inert pair effect.
In carbon family, the tendency towards catenation decreases on moving down the group, because the strength of bond decreases.
Metallic character always increases on moving down the group. Carbon is strictly non-metallic; silicon is essentially a non-metal in its chemical property; germanium is a semimetal with pronounced metallic properties; tin and lead are truly metallic.
Carbon atom does not form complexes, because it does not have d-orbitals in its valence shell. The other elements of group have d-orbitals in their valence shell, therefore, the tendency to form complexes with covalency higher than four increases on moving down the group.
In carbon family, the tendency towards catenation decreases on moving down the group, because the strength of bond decreases.
Metallic character always increases on moving down the group. Carbon is strictly non-metallic; silicon is essentially a non-metal in its chemical property; germanium is a semimetal with pronounced metallic properties; tin and lead are truly metallic.
Carbon atom does not form complexes, because it does not have d-orbitals in its valence shell. The other elements of group have d-orbitals in their valence shell, therefore, the tendency to form complexes with covalency higher than four increases on moving down the group.