Consider the following statements:

(A) molecule has a trigonal planar structure.
(B) Bond length of is shorter than .
(C) Isoelectronic molecules or ions have identical bond order.
(D) Dipole momen

Question

Consider the following statements:

(A)  molecule has a trigonal planar structure.
(B) Bond length of  is shorter than .
(C) Isoelectronic molecules or ions have identical bond order.
(D) Dipole moment of  is higher than that of water molecule.

Choose the correct answer:

Canvas Classes · Accepted Answer

Step 1 — Evaluate each statement:

(A)  has trigonal planar structure:
- N has 3 bonds + 1 lone pair → pyramidal (not trigonal planar)
- Statement A is incorrect ✗

(B) Bond length of  is shorter than :
-  has triple bond (bond order 3), bond length ≈ 110 pm
-  has double bond (bond order 2), bond length ≈ 121 pm
- Higher bond order → shorter bond →  is shorter ✓

(C) Isoelectronic molecules/ions have identical bond order:
- e.g., , CO,  are isoelectronic (10e⁻) and all have bond order 3 ✓

(D)

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