Q. 104.0( 5 Votes )
Which of the following solids is not an electrical conductor?
(A) Mg (s) (B) TiO (s)
(C) I2 (s) (D) H2O (s)
A. (A) only
B. (B) Only
C. (C) and (D)
D. (B), (C) and (D)
• I2 (s) is a non-polar molecular crystalline solid obviously not an electrical conductor i.e. they are non-conductors of electricity because it is formed by weakly dispersion forces; London forces and there is no entity (like ions or ) to conduct electricity.
H2O (s), which is hydrogen-bonded molecular crystalline solid also do not conduct electricity due to stronger hydrogen-bonding between adjacent water molecules there are no free ions left to conduct electricity.
• On the other hand option (A) Mg (s), which is metal and eventually has electrical conductivity properties because it has free and mobile electron (valence shell) which are cast evenly throughout the crystal.
• And in the case of (B) TiO (s) which behaves like a metal also can conduct electricity because the d-electrons are partially filled and leads to electrical conductivity.
Rate this question :
Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Chemistry - Exemplar
Why does electrical conductivity of semiconductors increase with the rise in temperature?Chemistry - Exemplar
To get a n-type semiconductor from silicon, it should be doped with a substance with valence__________.Chemistry - Exemplar
Which of the following statements are true about metals?Chemistry - Exemplar
Match the items given in Column I with the items given in Column II.