Which of the following pairs of compounds is isoelectronic and isostructural?
A.
$$BeC{l_2},Xe{F_2}$$
B.
$$Te{l_2},Xe{F_2}$$
C.
$$IBr_2^ - ,Xe{F_2}$$
D.
$$l{F_3},Xe{F_2}$$
Answer :
$$IBr_2^ - ,Xe{F_2}$$
Solution : Key concept Isoelectronic species have equal number of valence electrons .
Both $$IBr_2^ - $$ and $$Xe{F_2}$$ are linear and number of valence electrons present in both the species is
same, i.e. they are also isoelectronic.
S. No.
Compounds
Number of valence electrons
Geometry
1.
$$BeC{l_2}$$
2 + 14 = 16
Linear
2.
$$Xe{F_2}$$
8 + 14 = 22
Linear
3.
$$Te{l_2}$$
6 + 14 = 20
Bent or V-shape
4.
$$IBr_2^ - $$
7 + 14 + 1 = 22
Linear
5.
$$I{F_3}$$
7 + 21 = 28
T-shape
Releted MCQ Question on Inorganic Chemistry >> P - Block Elements
Releted Question 1
The reddish brown coloured gas formed when nitric oxide is oxidised by air is