Given below are statements about some molecules/ions. Identify the CORRECT statements. A. The dipole moment value of NF₃ is higher than that of NH₃. B. The dipole moment value of BeH₂ is zero. C. The bond order of O₂²⁻ and F₂ is same. D. The formal charge on the central oxygen atom of ozone is −1. E. In NO₂, all the three atoms satisfy the octet rule, hence it is very stable.

Given below are statements about some molecules ions Identify the correct statements

Q. Given below are statements about some molecules/ions.

Identify the CORRECT statements.

A. The dipole moment value of NF₃ is higher than that of NH₃.

B. The dipole moment value of BeH₂ is zero.

C. The bond order of O₂²⁻ and F₂ is same.

D. The formal charge on the central oxygen atom of ozone is −1.

E. In NO₂, all the three atoms satisfy the octet rule, hence it is very stable.

(A) B & C Only

(B) B, C & D Only

(D) A, B, C, D & E

Correct Answer: (A)

Explanation

Statement A is incorrect. In NF₃, the N–F bond dipoles oppose the lone pair dipole more effectively, resulting in a smaller net dipole moment than NH₃.

Statement B is correct. BeH₂ is linear and symmetrical, so the bond dipoles cancel each other, making the dipole moment zero.

Statement C is correct. The bond order of O₂²⁻ is 1 and the bond order of F₂ is also 1, hence they are the same.

Statement D is incorrect. In ozone, the central oxygen atom has a formal charge of +1, not −1.

Statement E is incorrect. NO₂ is an odd-electron molecule and does not satisfy the octet rule for all atoms.

Therefore, only statements B and C are correct.

Explanation

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