Page 3 - HA

(37)Describe the change in hybridisation (if any) of the Al atom in the

following reaction .
-
-
AlCl +Cl →AlCl 4
3
(38)Is there any change in the hybridisation of B and N atoms as a result
of the following reaction ?

BF + NH → F B.NH 3
3
3
3
(39)Which hybrid orbitals are used by carbon atoms in the following
molecules ?CH3-CH3; (b) CH3-CH=CH2; (c) CH3-CH2-OH; (d) CH3-CHO

(e) CH3COOH

+
(40)What is the hybridisation of N in NH ?
4
(41) What is the hybridisation of P in PCl ?
5
(42)What is the bond order of O ?
2

(43)What is the magnetic character of N ?
2

(44)What is the magnetic character of super oxide ion of oxygen ?

(45)In between N and O whose bond order is more ?
2
2
(46)Arrange the following according to their bond strength :

-
2-
+
O , O ,O , O
2
2
2
2
(48)Use molecular orbital theory to explain why the Be2 molecule does
not exist.
(49)Compare the relative stability of the following species and indicate
their magnetic properties;

2-
-
+
O , O ,O , O
2
2
2
2
(50)Write the significance of a plus and a minus sign shown in
representing the orbitals.