Formal charges of central atom in SO₃ , \(NO^-_3\)  and  \(NH^+_4\) are, respectively:

1. 0 , +1 , +1

2. +2 , +1 , +1

3. +2 , -1 , +1

4. 0, -1 , +1 

Assertion: Dipole moment of cis-1-chloropropene is more than trans-1-chloropropene 

Reason: In the case of cis-1-chloropropene, dipoles are additive while in the case of trans-1-chloropropene dipoles are subtractive.

1. Both assertion and reason are true, and the reason is the correct explanation of the assertion 

2. Both assertion and reason are true, but the reason is not the correct explanation of the assertion 

3. Assertion is true but reason is false 

4. Both assertion and reason are false 

Which of the following correctly represents the decreasing order of bond angles for NH₃, PH₃, NF₃, and PF₃?

1. NH₃ > PH₃ > NF₃  > PF₃   

2. NH₃ > NF₃ >  PH₃  > PF₃  

3. NH₃ > NF₃ >  PF₃  > PH₃   

4. NH₃ > PF₃ > NF₃  > PH₃

Case Study Question:
The relative location of the bond pair and the lone pair is decided by Bent's rule. The rule states that the more electronegative atom prefers to stay in the orbital having less s character while the lone pair prefers to stay in the orbital having more s character. In molecules with trigonal bipyramidal (TBP) geometry, the more electronegative atom prefers the axial position while the lone pair prefers the equatorial position. 

Which molecule, among the following, has non-zero dipole moment? 

1. PCl₃F₂ 

2. PCl₃Br₂ 

3. PCl₃(CH₃)₂ 

4. Both (2) and (3) 

Among the following, the molecule expected to be stabilized by anion formation is : C₂, O₂, NO, F₂

1. NO
2. O₂
3. C₂
4. F₂