Question

87. Which of the following order is incorrect ?
(a) Electronegativity of central atom : CF4 > CH4 > SiH 4
(b) Hydration energy : Al3+ > Be 2+ > Mg2+ > Nat
(c) Electrical conductance : F -(aq.) > Cl -(aq) > S2-(aq.)
(a) Magnetic moment : Ni4+ > V3+ > Sr2+

Answer 1

Answer :

C) Electrical conductance :

F(aq) > Cl (aq) > S2(aq)

Answer 2

Option C is the answer of this question

Explanation:

• Electronegativity of  $CF_{4}$ is more than $CH_{4}$ as it has fluorine which pulls the $e^{-}$ towards itself cause carbon lesser in electron density

• Hydration energy is proportional to charge. More the charge higher the hydration energy. Hydration energy decrease down the group.

• Magnetic moment is directly proportional to number of unpaired electrons so $Ni^{4+}$ = $3d^{6}$ containing higher no of unpaired electron then $V^{3+}$ =$3d^{2}$ contain only two no. of unpaired electron.
• Conductance depend upon ion.