Question

Normal text Arial 2. 3 7- The molecule of NH, is a) tetrahedral with bond angle 109.5° b) pyramidal with bond angle 107° c) trigonal with bond angle 120° d) linear with bond angle 180° 8- The NH, and So, -ions have (a) tetrahedral geometry (b) triangular geometry c) pyramidal geometry (d) square planar geometry 9-CO, is not polar whereas H,0 is a polar molecule. It is because I a) H.O is linear while Co, is a bent molecule b) water has higher density than CO2 c) CO, is linear while H,O is a bent molecule d) Co, is a gas while HO is a liquid at room temperature 10- Which of the following does not obey the octet rule? a) PCI, b) H.O c) NHÀ d) CCI. 11- Which one of the following is the most polar a) H-F b) H-CI c) - Br d) H-1 12- Which of the following has the smallest lattice energy? $ 4 % 5 3 & 7 6 8 9 W E R T Y U

Answer 1

1) NH3 is tetrahedral in shape with 107 degrees

hence option B is correct

2) NH4⁺ and SO4^2- both are tetrahedral in shape.

hence option A is correct

3) CO2 is linear in shape due to which both dipole moment are opposite to each other hence they cancelout each other.

hence option C is correct

4) In PCl5 phosphorus have 10 valence electrons hence it violated octet rule

hence option A is correct

5) fluorine is most ekectronegative element

hence option A is correct