Boron Family Flashcards
(12 cards)
1
Q
List of elements of g13
A
B Al Ga In Tl
2
Q
Periodicity of g 13
A
2,8,18,18,32
3
Q
Atomic radii of G13
A
Size increased down the group but:
B Ga Al In Tl
Because of introduction of d orbital
4
Q
IE of G13
A
Decreases down the group but:
B Tl Ga Al In
5
Q
EN of G13
A
Increases down the group
B Tl In Ga Al
(B likho fir sab switch kar do)
6
Q
Mp of G 13
A
B Al Tl In Ga
(Switch Ga with Tl)
7
Q
Why does B have exceptionally large MP
A
Stable structure
Icosahedral
B12 - 20 faces, 12 edges
8
Q
Density of G 13
A
Mass increases and density increases
B Al ga in tl
9
Q
Metal and non metal of G 13
A
B only non metal
Rest metals
10
Q
Preferred Os of Tl
A
+1 inert pair effect
11
Q
Why can B not exist as B3+?
A
Highest sum of IE
12
Q
Trend of Lewis acidic strength of G13
A
Decreases with increase in size
