Although nitrogen exhibits +5 oxidation state but does not form pentahalide because-

1. \(\Delta G \) value is highly negative for the formation of pentahalide
2. Doesnot have d orbitals to expand its covalence beyond four
3. Nitrogen didnot react with halide in any oxidation state
4. None of the above

PH₃ has a lower boiling point than NH₃ because-

1. NH₃ is ionic compound and PH₃ is covalent compound
2. The size of phosphorus is greater than nitrogen
3. Strong vander wall forces in NH₃ than PH₃ 
4. Hydrogen bonding occur in NH₃ but not in PH₃

Consider the following reaction 

\(NaN_{3}\overset{\Delta }{\rightarrow}Na + B\)

The product B is-

1. Nascent nitrogen
2. N₂
3. Na₃N
4. NH₃

NH₃ act as a Lewis base because-

1. It accept a pair of electron
2. It donate a pair of electron
3. It has vacant d orbital
4. None of the above

Assertion(A): NO₂ dimerize to form N₂O₄
Reason(R): NO₂ contains an odd number of valence electrons. On dimerization, a stable N₂O₄ molecule is formed with an even number of electrons.

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

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

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.

PH₃ reacts with HI and formed PH₄I, this reaction shows that-

1. PH₃ acidic in nature
2. PH₃ basic in nature
3. PH₃ is a strong lewis acid
4. PH₃ is more reactive than NH₃ with HI

Assertion(A): PCl₃ fume in moisture.
Reason(R): PCl₃ reacts with water which is present in moisture and for Cl₂.

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

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

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.

The incorrect statement about PCl₅ among the following is-

1. The hybridization of P in PCl₅ is sp³d.
2. PCl₅ decomposed and give PCl₃ and Cl₂.
3. All the five bonds in PCl₅ molecule equivalent
4. PCl₅ reacts with organic compounds containing –OH group converting them to chloro derivatives.


 

Assertion: H₃PO₂ is a reducing agent. 
Reason: All oxyacids of phosphorus that have P-H bonds act as strong reducing agents. H₃PO₂ has two P-H bonds hence, it acts as a strong reducing agent.

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

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

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.

Assertion(A): Elements of Group 16 generally show lower value of first ionisation enthalpy compared to the corresponding periods of group 15.

Reason(R): Elements of Group 16 is more electronegative than elements of Group 15.

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

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

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.