Carbon Family Flashcards
1
Q
What is the property that allows Carbon to form long chains and rings?
A
Catenation
2
Q
What is the oxidation states going down the group?
A
- Carbon 4+
- Silicon 4+
- Germanium 4+, 2+
- Tin 4+, 2+
- Lead 4+, 2+
3
Q
Describe the abundancy of Ge, Sn and Pb
A
Low abundancy
4
Q
What are the elements included in Group 14?
A
Carbon, Silicon, Germanium, Tin and Plumbum
5
Q
Why does carbon have the catenation property?
A
- Strong Carbon-Carbon bonding
- Small size of atoms that allows both carbons to approach each other closely and overlap their orbitals
- Strong bond energy
6
Q
Why is Carbon more covalent?
A
- Carbon has small size
- High Ionization energy
- More covalent
7
Q
What is the form of carbon in graphite?
A
Black graphite
8
Q
What is the form of carbon other than graphite
A
Hard and transparent diamond
9
Q
What are Germanium and Silicon usually used as?
A
- Semiconductors
- ## By doping it with Group13/15 elements
10
Q
What are the properties of Silicon?
A
- Chemically unreactive because of the presence of an oxide layer
11
Q
Why is silicon unreactive?
A
- Oxide layer
-Protects surface from further attacks - Requires high temperature to oxidize
12
Q
What halide does Silicon form?
A
Tetrahalide (SiX4)
13
Q
How is Ge produced?
A
- reduction of GeO2 with C or H2
- Recovered from flue dust when smelting Zn ores
14
Q
What halide can germanium exist in?
A
Tetrahalide and dihalide
