p-Block Elements - 02 (Nitrogen Family)

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Q1. What causes nitrogen to be chemically inert ? *

1 point

High bond energy

Short internuclear distance

Absence of bond polarity

Multiple bond formation in the molecule

Q2. Among the 15th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to *

1 point

Large ionization energy

Inert pair effect

High electronegativity

Non metallic character

Q3. Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group.This is due to *

1 point

dissimilar electronic configuration

reactivity of phosphorus

inert nature of nitrogen

due to presence of vacant d-orbitals

Q4. Which one has the lowest boiling point ? *

1 point

NH3

SbH3

PH3

AsH3

Q5. Most acidic oxide among the following is *

1 point

N2O4

As2O3

N2O5

P2O5

Q6. Which of the following species has the highest dipole moment? *

1 point

PH3

AsH3

SbH3

NH3

Q7. The correct decreasing order of basic strength is *

1 point

NH3 > PH3 > AsH3 > SbH3

SbH3 < AsH3 < PH3 < NH3

PH3 > AsH3 > NH3 > SbH3

AsH3 < SbH3 < PH3 < NH3

Q8. Which of the following fluorides does not exist? *

1 point

AsF5

NF5

PF5

SbF5

Q9. The p-block element of group 15 that forms predominantly basic oxide is *

1 point

Q10. With respect to protonic acids, which of the following statements is correct ? *

1 point

PH3 is less basic than NH3

PH3 is equally basic as NH3

PH3 is amphoteric while NH3 is basic

PH3 is more basic than NH3

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