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Chemistry Question on Chemical bonding and molecular structure

Which of the following order is correct?

A

AlCl3<MgCl2<NaClAlCl_3 < MgCl_2 < NaCl: Polarising powre

B

CO>CO2>HCO2−CO32−CO > CO_2 > HCO_2^- CO_3^{2-} : Bond length

C

BeCl2<NF3<NH3BeCl_2 < NF_3 < NH_3 : Dipole moment

D

H2S>NH3>SiH4BF3H_2S > NH_3 > SiH_4 BF_3 : Bond angle

Answer

BeCl2<NF3<NH3BeCl_2 < NF_3 < NH_3 : Dipole moment

Explanation

Solution

(a) Polarising power of cations increases with the increasing charge. (+1)NaCl\underset{\text{NaCl}}{ {(+1)}} $$ \underset{\text{109^{\circ}28'}}{ {SiH4}} >> \underset{\text{107^{\circ}}}{ {NH3}} >> \underset{\text{93.3^{\circ}}}{ {H2S}}